World Wine Weather

Judgement of Paris: Napa Wine Climate

Jan Dutton — Mon, 04 Dec 2023 01:10:19 +0000

What was the judgement of Paris?

The “Judgement of Paris” was a 1976 wine tasting organized by Steven Spurrier that pitted Napa Valley wine against the creme de la creme of French wine. As documented in a Time magazine article about the wine-tasting event, Napa Valley was not known at the time as the wine-producing powerhouse it is today. In fact, virtually everyone who participated assumed the French wines would win the tasting contest. If you were not previously aware of the Judgement of Paris, you’re probably guessing what happened. You guessed it! Napa Valley produced wines won the competition.

The cabernet sauvignon tasting was won by Stag Leap Wine Cellars. The chardonnay tasting was won by Chateau Montelena. While the monumental importance of this result to the wine world took some time to be realized (press presence at the event was a single Time magazine reporter), this event put Napa Valley on the global wine map. Heck, there is even a movie about it.

Weather and Wine Quality

It’s generally understood by wine critics that weather conditions during the growing season affects wine quality. The first quantitative study relating weather conditions to wine quality was published by Orely Ashenfelter in 2008. The paper compared the price of Bordeaux Grand Cru (i.e., the premier wineries of Bordeaux) wine producers to the weather conditions that evolved during the growing season of each vintage using linear regression. One of the weaknesses the original analysis is that the weather data was not normalized. This means the relative importance of temperature and precipitation during different times of growing season to wine quality can’t be easily compared.

The First Quantitative Weather vs. Wine Quality Study

World Wine Weather published an updated analysis of Ashenfelter’s wine quality paper. We normalized the weather data to allow intercomparison of the variables. The updated results show the most important variable to Bordeaux wine quality is summer temperatures. A warmer-than-normal summer produces better cabernet sauvignon. The amount of rainfall during winter months is important as well. Winter precipitation recharges the soil moisture in preparation for the warm summer months. And temperature and precipitation during harvest is important. Warmer-than-normal harvest temperatures helps the grape concentrate it’s water content intensifying the flavor. Lower-than-normal precipitation has the same effet.

The Most Recent Weather vs. Wine Quality Study

An interesting peer-reviewed paper made the wine news in October of 2023. The study was published by Andew Wood, of the University of Oxford. The paper’s title is “Seasonal weather impacts wine quality in Bordeaux.” This study is similar to the Ashenfelter paper but, instead of using the price of wine as the quality indicator, it uses a published history of Bordeaux wine critic wine ratings and weather data. The weather data is the ECMWF Reanalysis Version 5 (ERA5), which is itself interesting because ERA5 is a modeled weather data in which the solution is forced to known weather observations.

The results of this paper (see this image – a summary of results) show that greater than normal winter precipitation and summer temperature are beneficial to wine quality. Likewise, it shows that below-normal temperatures and precipitation during Autumn (i.e., harvest time) are beneficial to wine quality. This autumn result is different than what the Ashenfelter paper and our rework of the study show.

The Ashenfelter and Wood studies have conflicting results. Both agree that lower than normal precipitiation during Autumn improve wine quality. However, Ashenfelter suggests warmer-than-normal temperatures during Autumn improve wine quality while Wood’s suggests the opposite. Our rework of the Ashenfelter paper agrees that warmer temperatures are better and suggests that above normal precipitation before harvest improves wine quality. In our study, however, the coefficient is quite small. Because the data is normalized, the magnitude of the coefficient indicates its relative importance. In other words, the importance is relatively small, which is supported by Woods figure 2B graphic as well.

A Napa Valley Cabernet Sauvignon Quality Index

Using the research information about how weather during the year impacts wine quality, I propose two wine quality indices. These indices will be used to compare the weather that occurred in Napa Valley from 1965 to 2023. The index combines each of the wine season weather parameter into a single number (the index) allowing years to be inter compared.

Wines of the Judgement of Paris

The wines tasted and tested in the Judgement of Paris are shown below. I take no credit for this table. It’s a screenshot directly from Wilkipedia. As can be seen, the Napa Valley cabernet Sauvignon spanned years from 1969 to 1973

Napa Wine Climate During the Judgement Years

The graphic below shows the normalized seasonal averaged precipitation and temperature in Napa Valley from 1965 to 1974. The years highlighted in red are the vintage years of the different Napa Valley cabernet sauvignons.

Values above zero mean the temperature or precipitation was above normal (normal is defined as 1965 to 2020 in this case). Values below zero mean the temperature and precipitation were below normal.

The Napa Valley Wine Quality Index

The Napa Valley wind quality index is evaluated in two ways. The first is an equal weighted index.

Index = 0.25 * Winter Precipitation + 0.25 * Summer Precipitation + 0.25 * Summer Temperatures + 0.25*Harvest Temperatures.

The index uses normalized data from each of the “seasons” used in the equation. In this case:
Winter = November, December, January, February, and March contiguously. The November and December are from the prior year.
Summer = July, August, September
Harvest = October, which is generally when cabernet sauvignon is harvested in Napa Valley.

The second version of the index uses the information from the two aforementioned studies. In this case, the index is:

Index = 0.2 * Winter Precipitation + 0.3 * Summer Precipitation + 0.4 * Summer Temperatures + 0.1*Harvest Temperatures.

The second version of the index gives more importance to summer time (i.e., the core of the wine grape growing season) than the other seasons.

Climate of the Judgement of Paris Napa Valley Wines

The index is calculated for each year from 1965 to 2023 using the proposed weights above. The results are shown below.

The equal-weighted index shows the 1969 to 1973 years were decent but not exceptional years when compared to the full history of data. According to this index, 1986 was the best Napa Valley wine climate year since 1965. Wine-searcher.com say the 1986 Napa Valley vintage was “spectacularly good.” This suggests the index is valid.

The seasonal weighted index shows some differences for the Judgment years but 1972 and 1973 are still high index value years. 1986 is still rated as the best year in the history. The ranking of each index and the Judgement years is shown below. The 1973 seasonally weighted index, which according to the research referenced, should be a better indication of wine quality, is ranked 15th out of the 58 years.

It’s interesting to note the winning Cabernet Sauvignon wine is the 1973 Stags Leap Cellars. How much of the perceived quality of that wine was due to the excellent growing weather conditions of 1973? How good was 1970 relative to other years in Bordeaux? That question will be answered in a separate post.

The wine quality index results suggest the outcome of the tasting may have been different if differnt Napa Valley vintages were selected.

Wine & Climate: 9 Important Regions

Jan Dutton — Tue, 03 Jan 2023 21:36:25 +0000

There are many wine regions around the world and each has a distinct climate that contributes to it’s terroir. Below you’ll find ten important wine regions from around the world and a brief description of it’s climate.

Bordeaux, France
The climate in Bordeaux is influenced by the Atlantic Ocean and is generally mild, with cool winters and warm summers. The region has a maritime climate with high humidity and an average of 200 rainy days per year.
Napa Valley, California
The climate in Napa Valley is Mediterranean, with warm, dry summers and mild, wet winters. The region is known for its long, sunny growing season and relatively low rainfall.
Tuscany, Italy
The climate in Tuscany is characterized by hot, dry summers and cool, wet winters. The region has a Mediterranean climate with plenty of sunshine and low humidity.
Rioja, Spain
The climate in Rioja is continental, with hot, dry summers and cold, wet winters. The region has a relatively low annual rainfall and is known for its long, sunny growing season.
Marlborough, New Zealand
The climate in Marlborough is maritime, with cool, wet winters and hot, dry summers. The region is known for its high sunshine hours and relatively low rainfall.
Barossa Valley, Australia
The climate in the Barossa Valley is dry and hot, with hot, dry summers and cool, wet winters. The region has a Mediterranean climate with low humidity and plenty of sunshine.
Mosel, Germany
The climate in the Mosel region is cool and moist, with cool summers and mild winters. The region has a maritime climate with high humidity and relatively high rainfall.
Willamette Valley, Oregon
The climate in the Willamette Valley is maritime, with cool, wet winters and warm, dry summers. The region has a relatively high annual rainfall and is known for its mild temperatures and long growing season.
Maipo Valley, Chile
The climate in the Maipo Valley is Mediterranean, with hot, dry summers and cool, wet winters. The region has a relatively low annual rainfall and is known for its long, sunny growing season.

Marlborough Wine Region Climate

Jan Dutton — Mon, 25 Jul 2022 10:46:04 +0000

The Marlborough, New Zealand wine region is known for its bright sauvignon blancs. The region arrived on the international wine scene in 1985 when David Hohnen and Kevin Judd launched Cloudy Bay and their wines received rave reviews. The terrior of the region is the culture, geography, and climate that make a wine region unique. The Marlborough region’s climate is one aspect of its uniqueness.

Marlborough Wine Region Climate Data

The Marlborough Research Centre maintains weather stations in Blenheim and Awatere and both have relatively long histories. This post focuses on the data from the Blenheim station. The first published observation from the station was March 1st, 1996.

The data is available as one Excel file per year. I used an R script to sort through the different naming conventions to create one long consistent daily weather observation history for the Blenheim weather station.

Marlborough Wine Region Climate: Precipitation

The monthly average precipitation using the daily weather observations from 1986 to 2022 are shown below. The monthly averages range from approximately 75 mm to 120 mm, which makes is moderately dry. The graphic shows the lowest monthly rainfall and January is the driest month in Blenheim. The lowest rainfall in January is 0.4 mm, essentially no rainfall at all.

Marlborough Region Monthly Averaged Precipitation. The blue bars show the typical range of monthly average precipitation while the pink dots indicate the monthly mean precipitation.

Marlborough Wine Region Climate: Temperatures

Monthly average temperatures at the Blenheim station in the Marlborough wine region are shown below. Wintertime temperatures in July average just above 10°C while summertime temperatures average just below 20°C. These temperatures are cooler than other regions such as Bordeaux, which averages approximately 22 °C, and Albemarle, Virginia in the USA, which averages approximately 25°C.

The graphic also depicts the maximum and minimum temperature recorded in each month over the 1986 to 2022 history. January daily temperatures have reached approximately 37°C.

Marlborough, NZ Wine Region Monthly Average Temperature Annual Cycle. The red dots show the warmest day recorded in the historical data. The blue dots shows the coldest day recorded in the historical data. The blue bars show the typical range of monthly average temperatures while the pink dot shows the monthly average temperature

Marlborough Wine Region Climate Change

Have temperatures at the Blenhiem station been increasing over time? To answer this we examine two pieces of data. The first is the warmest maximum temperature and the coldest minimum temperature recorded in each month of the history. We then used a linear regression against time to estimate if the data includes a trend or not. Interestingly, the trend of the monthly maximum of maximum temperatures is 0.0029 °C per month. Likewise, the trend of the minimum of the monthly minimums is 0.0023 °C degrees per month. Over the 25 year history of data the warmest monthly temperatures have increased almost 0.9°C and the coldest monthly temperature have increased 0.7°C.

The Warmest and Coldest Days of Each Month in Blenheim, NZ

Another analysis is to look at the percentage of days within each month greater than a certain threshold. The graphic below shows the percentage of days each month temperatures are greater than 25°C. While not tested statistically, visually, there is no dramatic increase in the percentages.

The percentage of days each month with daily maximum temperature greater than 25 °C

The Marlborough region is on the northern end of New Zealand’s south island. It is likely any temperature increases due to climate change are currently being ameliorated by the nearby ocean.

Conclusion

This post presents the climate of the Blenheim, NZ in the Marlborough Wine Region as measured by the Wine Research Center in Blenheim. The climate is frequently described as cool and the data bears that out. The data suggest that temperatures are increasing slightly as the impacts of climate change are likely being ameliorated by the nearby ocean.

2021 California Red Wine Acres by County

Jan Dutton — Sat, 25 Jun 2022 14:26:52 +0000

2021 California Red Wine Acres by County

The counties are listed by the order of total red wine production, from greatest to least.

You can also check out the California counties with the greatest acres by red wine varietal or white wine varietal

San Joaquin County California Red Wine Acres

Sonoma County California Red Wine Acres

Napa County California Red Wine Acres

San Luis Obispo County California Red Wine Acres

Monterey County California Red Wine Acres

Madera County California Red Wine Acres

Fresno County California Red Wine Acres

Sacramento County California Red Wine Acres

Mendocino County California Red Wine Acres

Santa Barbara County California Red Wine Acres

Lake County California Red Wine Acres

Merced County California Red Wine Acres

Kern County California Red Wine Acres

Yolo County California Red Wine Acres

Amador County California Red Wine Acres

Stanislaus County California Red Wine Acres

Tulare County California Red Wine Acres

Solano County California Red Wine Acres

Alameda County California Red Wine Acres

El Dorado County California Red Wine Acres

San Benito County California Red Wine Acres

Santa Clara County California Red Wine Acres

Colusa County California Red Wine Acres

Contra Costa County California Red Wine Acres

Kings County California Red Wine Acres

Riverside County California Red Wine Acres

San Diego County California Red Wine Acres

Calaveras County California Red Wine Acres

Nevada County California Red Wine Acres

Santa Cruz County California Red Wine Acres

San Bernardino County California Red Wine Acres

Los Angeles County California Red Wine Acres

Marin County California Red Wine Acres

Placer County California Red Wine Acres

Butte County California Red Wine Acres

Humboldt County California Red Wine Acres

Tehama County California Red Wine Acres

San Mateo County California Red Wine Acres

Yuba County California Red Wine Acres

Mariposa County California Red Wine Acres

Trinity County California Red Wine Acres

Shasta County California Red Wine Acres

Ventura County California Red Wine Acres

Tuolumne County California Red Wine Acres

Sutter County California Red Wine Acres

Glenn County California Red Wine Acres

Siskiyou County California Red Wine Acres

Lassen County California Red Wine Acres

Orange County California Red Wine Acres

2021 San Joaquin County Red Wine Acres

What red wine grapes were grown in San Joaquin County in 2021?

Rank	Variety	Acres
2021 San Joaquin County Red Wine Variety Planted Acres
1	Zinfandel	15246
2	Cabernet Sauvignon	12251
3	Merlot	6806
4	Petite Sirah	2899
5	Pinot Noir	2893
6	Syrah	1404
7	Malbec	960
8	Petit Verdot	693
9	Teroldego	495
10	Primitivo	361
11	Carignane	268
12	Grenache	257
13	Alicante Bouschet	182
14	Barbera	172
15	Touriga Nacional	163
16	Tannat	124
17	Tempranillo	119
18	Cabernet Franc	84
19	Sangiovese	84
20	Mission	61
21	Dornfelder	44
22	Rubired	36
23	Cinsaut	30
24	Muscat Hamburg	30
25	Ruby Cabernet	30
26	Montepulciano	26
27	Mourvedre	16
28	Souzao	15
29	Graciano	9
30	Aglianico	7
31	Carnelian	4
32	Charbono	4
33	Dolcetto	3
34	Counoise	0

2021 Sonoma County Red Wine Acres

What red wine grapes were grown in Sonoma County in 2021?

Rank	Variety	Acres
2021 Sonoma County Red Wine Variety Planted Acres
1	Pinot Noir	12872
2	Cabernet Sauvignon	12722
3	Zinfandel	4730
4	Merlot	4157
5	Syrah	1360
6	Petite Sirah	677
7	Cabernet Franc	586
8	Malbec	448
9	Sangiovese	282
10	Grenache	267
11	Petit Verdot	248
12	Carignane	159
13	Mourvedre	82
14	Meunier	76
15	Primitivo	56
16	Barbera	51
17	Alicante Bouschet	47
18	Tempranillo	29
19	Valdiguie	16
20	Teroldego	11
21	Nebbiolo	10
22	Dolcetto	9
23	Carmenere	8
24	Cinsaut	8
25	Tannat	8
26	Aglianico	4
27	Counoise	4
28	Graciano	4
29	Mission	3
30	Muscat Hamburg	2
31	Touriga Nacional	2
32	Lagrein	1
33	Montepulciano	1
34	Ruby Cabernet	1
35	Souzao	1

2021 Napa County Red Wine Acres

What red wine grapes were grown in Napa County in 2021?

Rank	Variety	Acres
2021 Napa County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	22494
2	Merlot	4287
3	Pinot Noir	2633
4	Zinfandel	1382
5	Cabernet Franc	1232
6	Petite Sirah	810
7	Syrah	734
8	Petit Verdot	729
9	Malbec	508
10	Sangiovese	121
11	Primitivo	59
12	Grenache	55
13	Meunier	48
14	Charbono	45
15	Tempranillo	29
16	Valdiguie	19
17	Mourvedre	18
18	Touriga Nacional	14
19	Carmenere	11
20	Souzao	10
21	Nebbiolo	5
22	Barbera	4
23	Carignane	4
24	Dolcetto	4
25	Tannat	4
26	Cinsaut	3
27	Muscat Hamburg	3
28	Aglianico	2
29	Alicante Bouschet	2
30	Counoise	2
31	Montepulciano	1

2021 San Luis Obispo County Red Wine Acres

What red wine grapes were grown in San Luis Obispo County in 2021?

Rank	Variety	Acres
2021 San Luis Obispo County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	15142
2	Merlot	3206
3	Syrah	2120
4	Pinot Noir	2000
5	Petite Sirah	1873
6	Zinfandel	1788
7	Petit Verdot	657
8	Grenache	635
9	Cabernet Franc	518
10	Malbec	452
11	Mourvedre	308
12	Primitivo	266
13	Tempranillo	173
14	Sangiovese	141
15	Tannat	63
16	Barbera	52
17	Lagrein	39
18	Valdiguie	34
19	Cinsaut	27
20	Carignane	26
21	Counoise	25
22	Aglianico	22
23	Touriga Nacional	13
24	Alicante Bouschet	12
25	Graciano	12
26	Nebbiolo	12
27	Charbono	9
28	Dolcetto	7
29	Carmenere	6
30	Souzao	6
31	Muscat Hamburg	5
32	Montepulciano	2
33	Teroldego	2
34	Mission	1

2021 Monterey County Red Wine Acres

What red wine grapes were grown in Monterey County in 2021?

Rank	Variety	Acres
2021 Monterey County Red Wine Variety Planted Acres
1	Pinot Noir	10891
2	Cabernet Sauvignon	4780
3	Merlot	3442
4	Syrah	1129
5	Grenache	379
6	Malbec	328
7	Petite Sirah	299
8	Petit Verdot	185
9	Zinfandel	132
10	Cabernet Franc	110
11	Tannat	35
12	Valdiguie	30
13	Tempranillo	23
14	Mourvedre	18
15	Sangiovese	16
16	Barbera	15
17	Cinsaut	13
18	Primitivo	7
19	Souzao	7
20	Dolcetto	6
21	Charbono	2
22	Carignane	1
23	Dornfelder	1
24	Meunier	1
25	Touriga Nacional	1

2021 Madera County Red Wine Acres

What red wine grapes were grown in Madera County in 2021?

Rank	Variety	Acres
2021 Madera County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	3370
2	Merlot	2741
3	Zinfandel	2049
4	Rubired	1808
5	Syrah	1552
6	Carignane	1166
7	Grenache	1039
8	Barbera	903
9	Ruby Cabernet	865
10	Royalty	217
11	Mourvedre	206
12	Petite Sirah	142
13	Primitivo	126
14	Alicante Bouschet	112
15	Pinot Noir	75
16	Sangiovese	71
17	Petit Verdot	51
18	Mission	50
19	Malbec	46
20	Carmenere	37
21	Muscat Hamburg	33
22	Souzao	30
23	Tannat	23
24	Cabernet Franc	21
25	Nebbiolo	21
26	Centurian	12
27	Touriga Nacional	7
28	Valdiguie	7
29	Teroldego	5
30	Tempranillo	1

2021 Fresno County Red Wine Acres

What red wine grapes were grown in Fresno County in 2021?

Rank	Variety	Acres
2021 Fresno County Red Wine Variety Planted Acres
1	Rubired	4545
2	Zinfandel	3142
3	Barbera	2605
4	Ruby Cabernet	1425
5	Cabernet Sauvignon	997
6	Syrah	960
7	Grenache	714
8	Merlot	448
9	Primitivo	263
10	Mission	221
11	Alicante Bouschet	213
12	Pinot Noir	111
13	Carignane	92
14	Carnelian	89
15	Tempranillo	85
16	Centurian	80
17	Sangiovese	48
18	Teroldego	33
19	Petit Verdot	25
20	Muscat Hamburg	20
21	Petite Sirah	18
22	Royalty	13
23	Malbec	12
24	Souzao	5
25	Cabernet Franc	4
26	Touriga Nacional	4
27	Mourvedre	2

2021 Sacramento County Red Wine Acres

What red wine grapes were grown in Sacramento County in 2021?

Rank	Variety	Acres
2021 Sacramento County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	4753
2	Merlot	3056
3	Pinot Noir	2361
4	Petite Sirah	1338
5	Zinfandel	971
6	Syrah	925
7	Petit Verdot	382
8	Malbec	343
9	Tannat	224
10	Teroldego	221
11	Cabernet Franc	90
12	Touriga Nacional	48
13	Sangiovese	22
14	Lagrein	21
15	Barbera	20
16	Graciano	20
17	Ruby Cabernet	20
18	Dornfelder	19
19	Alicante Bouschet	18
20	Grenache	11
21	Tempranillo	9
22	Souzao	6
23	Carignane	5
24	Mourvedre	5
25	Primitivo	2
26	Carmenere	1

2021 Mendocino County Red Wine Acres

What red wine grapes were grown in Mendocino County in 2021?

Rank	Variety	Acres
2021 Mendocino County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	3147
2	Pinot Noir	2889
3	Zinfandel	1625
4	Merlot	1178
5	Petite Sirah	576
6	Syrah	537
7	Carignane	326
8	Grenache	133
9	Sangiovese	102
10	Malbec	74
11	Barbera	68
12	Primitivo	61
13	Cabernet Franc	33
14	Petit Verdot	31
15	Dolcetto	19
16	Tempranillo	14
17	Valdiguie	14
18	Meunier	10
19	Nebbiolo	9
20	Charbono	8
21	Mourvedre	8
22	Montepulciano	5
23	Tannat	5
24	Counoise	4
25	Touriga Nacional	4
26	Souzao	2
27	Aglianico	1
28	Alicante Bouschet	1
29	Carmenere	1
30	Cinsaut	1

2021 Santa Barbara County Red Wine Acres

What red wine grapes were grown in Santa Barbara County in 2021?

Rank	Variety	Acres
2021 Santa Barbara County Red Wine Variety Planted Acres
1	Pinot Noir	5611
2	Syrah	1243
3	Cabernet Sauvignon	981
4	Grenache	378
5	Merlot	250
6	Petite Sirah	139
7	Mourvedre	121
8	Cabernet Franc	93
9	Sangiovese	82
10	Malbec	57
11	Petit Verdot	53
12	Nebbiolo	26
13	Barbera	12
14	Dolcetto	11
15	Zinfandel	11
16	Cinsaut	10
17	Tempranillo	8
18	Graciano	6
19	Meunier	6
20	Carignane	5
21	Counoise	5
22	Mission	4
23	Valdiguie	4
24	Montepulciano	3
25	Dornfelder	2
26	Lagrein	2
27	Teroldego	1
28	Touriga Nacional	1

2021 Lake County Red Wine Acres

What red wine grapes were grown in Lake County in 2021?

Rank	Variety	Acres
2021 Lake County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	5412
2	Petite Sirah	715
3	Zinfandel	371
4	Merlot	329
5	Syrah	216
6	Malbec	159
7	Cabernet Franc	126
8	Petit Verdot	102
9	Pinot Noir	92
10	Tempranillo	35
11	Grenache	27
12	Mourvedre	26
13	Valdiguie	26
14	Barbera	18
15	Teroldego	11
16	Carignane	6
17	Sangiovese	6
18	Primitivo	5
19	Nebbiolo	4
20	Touriga Nacional	2
21	Aglianico	1
22	Alicante Bouschet	1
23	Carmenere	1
24	Cinsaut	1
25	Dolcetto	1

2021 Merced County Red Wine Acres

What red wine grapes were grown in Merced County in 2021?

Rank	Variety	Acres
2021 Merced County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	1836
2	Merlot	1561
3	Pinot Noir	922
4	Zinfandel	885
5	Rubired	662
6	Ruby Cabernet	168
7	Alicante Bouschet	137
8	Syrah	130
9	Malbec	105
10	Petite Sirah	20
11	Barbera	10

2021 Kern County Red Wine Acres

What red wine grapes were grown in Kern County in 2021?

Rank	Variety	Acres
2021 Kern County Red Wine Variety Planted Acres
1	Rubired	1351
2	Cabernet Sauvignon	1281
3	Zinfandel	1161
4	Ruby Cabernet	493
5	Merlot	461
6	Syrah	80
7	Grenache	79
8	Carnelian	51
9	Muscat Hamburg	35
10	Barbera	28
11	Petite Sirah	26
12	Cabernet Franc	5
13	Pinot Noir	3
14	Malbec	1
15	Tempranillo	1

2021 Yolo County Red Wine Acres

What red wine grapes were grown in Yolo County in 2021?

Rank	Variety	Acres
2021 Yolo County Red Wine Variety Planted Acres
1	Pinot Noir	1380
2	Petite Sirah	877
3	Cabernet Sauvignon	861
4	Merlot	540
5	Syrah	431
6	Petit Verdot	125
7	Tempranillo	114
8	Malbec	99
9	Teroldego	82
10	Tannat	77
11	Zinfandel	63
12	Sangiovese	30
13	Valdiguie	13
14	Barbera	12
15	Montepulciano	10
16	Grenache	9
17	Aglianico	8
18	Cabernet Franc	8
19	Counoise	7
20	Graciano	4
21	Mourvedre	2
22	Nebbiolo	2
23	Primitivo	2
24	Carignane	1
25	Cinsaut	1
26	Dolcetto	1

2021 Amador County Red Wine Acres

What red wine grapes were grown in Amador County in 2021?

Rank	Variety	Acres
2021 Amador County Red Wine Variety Planted Acres
1	Zinfandel	1831
2	Cabernet Sauvignon	318
3	Barbera	235
4	Syrah	225
5	Sangiovese	127
6	Petite Sirah	126
7	Primitivo	77
8	Malbec	71
9	Cabernet Franc	59
10	Mourvedre	40
11	Tempranillo	37
12	Grenache	34
13	Merlot	28
14	Nebbiolo	20
15	Touriga Nacional	10
16	Tannat	8
17	Aglianico	7
18	Alicante Bouschet	6
19	Graciano	6
20	Montepulciano	6
21	Souzao	6
22	Teroldego	6
23	Muscat Hamburg	4
24	Mission	3
25	Petit Verdot	3
26	Carignane	2
27	Cinsaut	1
28	Dolcetto	1
29	Valdiguie	1

2021 Stanislaus County Red Wine Acres

What red wine grapes were grown in Stanislaus County in 2021?

Rank	Variety	Acres
2021 Stanislaus County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	1096
2	Zinfandel	472
3	Merlot	417
4	Syrah	306
5	Ruby Cabernet	305
6	Pinot Noir	166
7	Petite Sirah	88
8	Grenache	39
9	Petit Verdot	17
10	Cabernet Franc	12
11	Tempranillo	12
12	Malbec	8
13	Barbera	4
14	Sangiovese	3
15	Carignane	2
16	Primitivo	1
17	Tannat	1

2021 Tulare County Red Wine Acres

What red wine grapes were grown in Tulare County in 2021?

Rank	Variety	Acres
2021 Tulare County Red Wine Variety Planted Acres
1	Rubired	939
2	Cabernet Sauvignon	518
3	Zinfandel	365
4	Ruby Cabernet	300
5	Merlot	246
6	Alicante Bouschet	105
7	Muscat Hamburg	74
8	Syrah	74
9	Tempranillo	72
10	Barbera	68
11	Grenache	22
12	Mission	22
13	Carnelian	20
14	Pinot Noir	10
15	Teroldego	5
16	Nebbiolo	1
17	Petit Verdot	1
18	Tannat	1

2021 Solano County Red Wine Acres

What red wine grapes were grown in Solano County in 2021?

Rank	Variety	Acres
2021 Solano County Red Wine Variety Planted Acres
1	Pinot Noir	762
2	Cabernet Sauvignon	522
3	Petite Sirah	320
4	Zinfandel	215
5	Merlot	144
6	Syrah	123
7	Valdiguie	52
8	Grenache	50
9	Malbec	30
10	Cabernet Franc	29
11	Sangiovese	21
12	Carignane	15
13	Tannat	14
14	Mourvedre	12
15	Petit Verdot	8
16	Primitivo	7
17	Charbono	2
18	Counoise	2
19	Tempranillo	2
20	Dolcetto	0
21	Muscat Hamburg	0
22	Teroldego	0
23	Touriga Nacional	0

2021 Alameda County Red Wine Acres

What red wine grapes were grown in Alameda County in 2021?

Rank	Variety	Acres
2021 Alameda County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	950
2	Merlot	332
3	Petite Sirah	267
4	Syrah	165
5	Zinfandel	133
6	Petit Verdot	76
7	Barbera	37
8	Pinot Noir	36
9	Tempranillo	33
10	Cabernet Franc	29
11	Sangiovese	19
12	Malbec	15
13	Nebbiolo	14
14	Grenache	11
15	Mourvedre	11
16	Touriga Nacional	8
17	Counoise	7
18	Primitivo	5
19	Graciano	1
20	Souzao	1

2021 El Dorado County Red Wine Acres

What red wine grapes were grown in El Dorado County in 2021?

Rank	Variety	Acres
2021 El Dorado County Red Wine Variety Planted Acres
1	Zinfandel	428
2	Cabernet Sauvignon	320
3	Syrah	196
4	Merlot	169
5	Petite Sirah	125
6	Barbera	115
7	Mourvedre	84
8	Cabernet Franc	81
9	Grenache	68
10	Primitivo	49
11	Malbec	44
12	Tempranillo	38
13	Sangiovese	36
14	Pinot Noir	22
15	Petit Verdot	17
16	Aglianico	9
17	Dolcetto	8
18	Cinsaut	6
19	Touriga Nacional	6
20	Charbono	5
21	Counoise	4
22	Nebbiolo	4
23	Souzao	4
24	Valdiguie	4
25	Tannat	3
26	Alicante Bouschet	2
27	Carignane	2
28	Lagrein	2
29	Muscat Hamburg	2
30	Carmenere	1
31	Graciano	1
32	Montepulciano	1

2021 San Benito County Red Wine Acres

What red wine grapes were grown in San Benito County in 2021?

Rank	Variety	Acres
2021 San Benito County Red Wine Variety Planted Acres
1	Pinot Noir	664
2	Cabernet Sauvignon	378
3	Merlot	189
4	Syrah	59
5	Zinfandel	59
6	Petite Sirah	46
7	Malbec	41
8	Sangiovese	38
9	Grenache	26
10	Cabernet Franc	19
11	Teroldego	10
12	Mourvedre	6
13	Petit Verdot	3
14	Barbera	2
15	Dornfelder	2
16	Montepulciano	2
17	Counoise	1
18	Nebbiolo	1
19	Aglianico	0
20	Graciano	0
21	Tempranillo	0

2021 Santa Clara County Red Wine Acres

What red wine grapes were grown in Santa Clara County in 2021?

Rank	Variety	Acres
2021 Santa Clara County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	382
2	Pinot Noir	275
3	Merlot	126
4	Zinfandel	92
5	Syrah	77
6	Cabernet Franc	44
7	Petite Sirah	28
8	Grenache	25
9	Carignane	22
10	Malbec	21
11	Petit Verdot	19
12	Sangiovese	12
13	Teroldego	5
14	Barbera	4
15	Charbono	3
16	Cinsaut	3
17	Nebbiolo	3
18	Tempranillo	3
19	Mourvedre	2
20	Alicante Bouschet	1
21	Primitivo	1
22	Tannat	1

2021 Colusa County Red Wine Acres

What red wine grapes were grown in Colusa County in 2021?

Rank	Variety	Acres
2021 Colusa County Red Wine Variety Planted Acres
1	Zinfandel	773
2	Syrah	138
3	Cabernet Sauvignon	81
4	Pinot Noir	33
5	Petit Verdot	30
6	Petite Sirah	5

2021 Contra Costa County Red Wine Acres

What red wine grapes were grown in Contra Costa County in 2021?

Rank	Variety	Acres
2021 Contra Costa County Red Wine Variety Planted Acres
1	Zinfandel	394
2	Mourvedre	187
3	Syrah	69
4	Petite Sirah	68
5	Carignane	60
6	Merlot	47
7	Cabernet Sauvignon	42
8	Grenache	22
9	Alicante Bouschet	8
10	Cabernet Franc	7
11	Sangiovese	6
12	Tempranillo	6
13	Malbec	5
14	Montepulciano	5
15	Petit Verdot	5
16	Pinot Noir	4
17	Cinsaut	2
18	Touriga Nacional	2
19	Primitivo	1
20	Souzao	1
21	Barbera	0

2021 Kings County Red Wine Acres

What red wine grapes were grown in Kings County in 2021?

Rank	Variety	Acres
2021 Kings County Red Wine Variety Planted Acres
1	Rubired	458
2	Merlot	161
3	Barbera	133
4	Zinfandel	64
5	Grenache	40
6	Cabernet Sauvignon	38

2021 Riverside County Red Wine Acres

What red wine grapes were grown in Riverside County in 2021?

Rank	Variety	Acres
2021 Riverside County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	202
2	Syrah	87
3	Merlot	70
4	Zinfandel	50
5	Sangiovese	48
6	Cabernet Franc	47
7	Petite Sirah	41
8	Alicante Bouschet	31
9	Tempranillo	31
10	Malbec	28
11	Grenache	27
12	Montepulciano	25
13	Mourvedre	16
14	Petit Verdot	15
15	Barbera	14
16	Cinsaut	13
17	Pinot Noir	13
18	Aglianico	11
19	Meunier	5
20	Primitivo	5
21	Carmenere	4
22	Nebbiolo	3
23	Ruby Cabernet	3
24	Charbono	2
25	Tannat	2
26	Counoise	1
27	Dolcetto	1
28	Muscat Hamburg	1
29	Rubired	1
30	Touriga Nacional	1
31	Mission	0

2021 San Diego County Red Wine Acres

What red wine grapes were grown in San Diego County in 2021?

Rank	Variety	Acres
2021 San Diego County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	149
2	Syrah	83
3	Merlot	67
4	Sangiovese	44
5	Cabernet Franc	30
6	Zinfandel	24
7	Grenache	22
8	Malbec	16
9	Tempranillo	16
10	Petite Sirah	15
11	Carignane	10
12	Mourvedre	9
13	Aglianico	6
14	Barbera	6
15	Carmenere	5
16	Petit Verdot	5
17	Primitivo	5
18	Cinsaut	4
19	Tannat	3
20	Counoise	2
21	Montepulciano	2
22	Nebbiolo	2
23	Pinot Noir	2
24	Meunier	1
25	Ruby Cabernet	1
26	Teroldego	1

2021 Calaveras County Red Wine Acres

What red wine grapes were grown in Calaveras County in 2021?

Rank	Variety	Acres
2021 Calaveras County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	98
2	Zinfandel	79
3	Merlot	64
4	Petite Sirah	57
5	Syrah	52
6	Cabernet Franc	25
7	Tempranillo	25
8	Barbera	20
9	Mourvedre	15
10	Sangiovese	12
11	Malbec	10
12	Grenache	9
13	Pinot Noir	8
14	Touriga Nacional	6
15	Petit Verdot	4
16	Carignane	2
17	Charbono	2
18	Mission	2
19	Tannat	2
20	Alicante Bouschet	1
21	Cinsaut	1
22	Graciano	1
23	Primitivo	1
24	Souzao	1
25	Teroldego	1

2021 Nevada County Red Wine Acres

What red wine grapes were grown in Nevada County in 2021?

Rank	Variety	Acres
2021 Nevada County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	172
2	Syrah	93
3	Cabernet Franc	81
4	Merlot	50
5	Zinfandel	28
6	Petite Sirah	15
7	Sangiovese	15
8	Barbera	7
9	Primitivo	4
10	Cinsaut	1
11	Graciano	1
12	Grenache	1
13	Montepulciano	1
14	Mourvedre	1
15	Petit Verdot	1
16	Tannat	1
17	Tempranillo	1

2021 Santa Cruz County Red Wine Acres

What red wine grapes were grown in Santa Cruz County in 2021?

Rank	Variety	Acres
2021 Santa Cruz County Red Wine Variety Planted Acres
1	Pinot Noir	277
2	Syrah	22
3	Merlot	15
4	Cabernet Sauvignon	13
5	Zinfandel	9
6	Carignane	4
7	Dolcetto	2
8	Grenache	2
9	Petite Sirah	2
10	Barbera	1
11	Cabernet Franc	1
12	Nebbiolo	1
13	Sangiovese	1

2021 San Bernardino County Red Wine Acres

What red wine grapes were grown in San Bernardino County in 2021?

Rank	Variety	Acres
2021 San Bernardino County Red Wine Variety Planted Acres
1	Zinfandel	261
2	Grenache	24
3	Mission	13
4	Cabernet Sauvignon	4
5	Petite Sirah	3
6	Sangiovese	3
7	Syrah	3
8	Cabernet Franc	2
9	Merlot	2
10	Mourvedre	2
11	Barbera	1
12	Tempranillo	1

2021 Los Angeles County Red Wine Acres

What red wine grapes were grown in Los Angeles County in 2021?

Rank	Variety	Acres
2021 Los Angeles County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	50
2	Syrah	27
3	Zinfandel	19
4	Merlot	18
5	Sangiovese	9
6	Pinot Noir	6
7	Cabernet Franc	5
8	Grenache	3
9	Malbec	3
10	Petit Verdot	2
11	Petite Sirah	2
12	Tempranillo	1

2021 Marin County Red Wine Acres

What red wine grapes were grown in Marin County in 2021?

Rank	Variety	Acres
2021 Marin County Red Wine Variety Planted Acres
1	Pinot Noir	124
2	Cabernet Sauvignon	7
3	Syrah	6
4	Merlot	1
5	Montepulciano	1

2021 Placer County Red Wine Acres

What red wine grapes were grown in Placer County in 2021?

Rank	Variety	Acres
2021 Placer County Red Wine Variety Planted Acres
1	Zinfandel	32
2	Syrah	16
3	Cabernet Sauvignon	13
4	Cabernet Franc	12
5	Barbera	10
6	Petite Sirah	10
7	Petit Verdot	9
8	Mourvedre	6
9	Grenache	5
10	Sangiovese	4
11	Malbec	3
12	Merlot	3
13	Tempranillo	3
14	Pinot Noir	1
15	Primitivo	1
16	Teroldego	1

2021 Butte County Red Wine Acres

What red wine grapes were grown in Butte County in 2021?

Rank	Variety	Acres
2021 Butte County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	41
2	Zinfandel	23
3	Syrah	14
4	Sangiovese	6
5	Petit Verdot	4
6	Petite Sirah	4
7	Primitivo	4
8	Barbera	3
9	Malbec	3
10	Cabernet Franc	2
11	Mourvedre	2
12	Nebbiolo	2
13	Pinot Noir	2
14	Tempranillo	2
15	Grenache	1

2021 Humboldt County Red Wine Acres

What red wine grapes were grown in Humboldt County in 2021?

Rank	Variety	Acres
2021 Humboldt County Red Wine Variety Planted Acres
1	Pinot Noir	35
2	Merlot	22
3	Cabernet Sauvignon	17
4	Syrah	13
5	Cabernet Franc	4
6	Nebbiolo	4
7	Petite Sirah	2
8	Sangiovese	2
9	Barbera	1
10	Dolcetto	1
11	Zinfandel	1

2021 Tehama County Red Wine Acres

What red wine grapes were grown in Tehama County in 2021?

Rank	Variety	Acres
2021 Tehama County Red Wine Variety Planted Acres
1	Zinfandel	27
2	Syrah	17
3	Petite Sirah	15
4	Grenache	10
5	Cabernet Sauvignon	6
6	Pinot Noir	5
7	Merlot	2
8	Tempranillo	2
9	Cabernet Franc	1
10	Malbec	1
11	Mourvedre	1

2021 San Mateo County Red Wine Acres

What red wine grapes were grown in San Mateo County in 2021?

Rank	Variety	Acres
2021 San Mateo County Red Wine Variety Planted Acres
1	Pinot Noir	45
2	Cabernet Sauvignon	6
3	Zinfandel	5
4	Merlot	1
5	Nebbiolo	1

2021 Yuba County Red Wine Acres

What red wine grapes were grown in Yuba County in 2021?

Rank	Variety	Acres
2021 Yuba County Red Wine Variety Planted Acres
1	Petite Sirah	18
2	Syrah	16
3	Cabernet Sauvignon	14
4	Pinot Noir	5
5	Merlot	2
6	Sangiovese	2
7	Cabernet Franc	1

2021 Mariposa County Red Wine Acres

What red wine grapes were grown in Mariposa County in 2021?

Rank	Variety	Acres
2021 Mariposa County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	20
2	Merlot	11
3	Zinfandel	8
4	Syrah	6
5	Cabernet Franc	2
6	Grenache	2
7	Mourvedre	1
8	Sangiovese	1

2021 Trinity County Red Wine Acres

What red wine grapes were grown in Trinity County in 2021?

Rank	Variety	Acres
2021 Trinity County Red Wine Variety Planted Acres
1	Pinot Noir	14
2	Syrah	12
3	Zinfandel	11
4	Merlot	9
5	Cabernet Sauvignon	1

2021 Shasta County Red Wine Acres

What red wine grapes were grown in Shasta County in 2021?

Rank	Variety	Acres
2021 Shasta County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	12
2	Syrah	8
3	Malbec	6
4	Merlot	6
5	Petit Verdot	2
6	Barbera	1
7	Cabernet Franc	1
8	Grenache	1
9	Mourvedre	1
10	Petite Sirah	1
11	Sangiovese	1
12	Tempranillo	1
13	Zinfandel	1

2021 Ventura County Red Wine Acres

What red wine grapes were grown in Ventura County in 2021?

Rank	Variety	Acres
2021 Ventura County Red Wine Variety Planted Acres
1	Syrah	18
2	Grenache	3
3	Cabernet Sauvignon	2
4	Merlot	2
5	Mourvedre	2
6	Zinfandel	2
7	Barbera	1
8	Malbec	1
9	Petite Sirah	1
10	Pinot Noir	1
11	Tempranillo	1
12	Touriga Nacional	1

2021 Tuolumne County Red Wine Acres

What red wine grapes were grown in Tuolumne County in 2021?

Rank	Variety	Acres
2021 Tuolumne County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	7
2	Syrah	4
3	Barbera	1
4	Cabernet Franc	1
5	Grenache	1
6	Merlot	1
7	Petite Sirah	1
8	Primitivo	1
9	Sangiovese	1
10	Tannat	1
11	Tempranillo	1
12	Zinfandel	1

2021 Sutter County Red Wine Acres

What red wine grapes were grown in Sutter County in 2021?

Rank	Variety	Acres
2021 Sutter County Red Wine Variety Planted Acres
1	Zinfandel	5
2	Malbec	2
3	Tempranillo	2
4	Barbera	1
5	Cabernet Sauvignon	1
6	Dolcetto	1
7	Merlot	1
8	Nebbiolo	1
9	Primitivo	1
10	Teroldego	1

2021 Glenn County Red Wine Acres

What red wine grapes were grown in Glenn County in 2021?

Rank	Variety	Acres
2021 Glenn County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	4
2	Merlot	3
3	Syrah	3

2021 Siskiyou County Red Wine Acres

What red wine grapes were grown in Siskiyou County in 2021?

Rank	Variety	Acres
2021 Siskiyou County Red Wine Variety Planted Acres
1	Pinot Noir	3
2	Cabernet Sauvignon	1
3	Merlot	1
4	Petite Sirah	1
5	Tempranillo	1
6	Zinfandel	1

2021 Lassen County Red Wine Acres

What red wine grapes were grown in Lassen County in 2021?

Rank	Variety	Acres
2021 Lassen County Red Wine Variety Planted Acres
1	Pinot Noir	1

2021 Orange County Red Wine Acres

What red wine grapes were grown in Orange County in 2021?

Rank	Variety	Acres
2021 Orange County Red Wine Variety Planted Acres
1	Cabernet Sauvignon	1

2021 California White Wine Acres by County

Jan Dutton — Sat, 25 Jun 2022 14:25:47 +0000

2021 California White Wine Acres by County

The counties are listed by the order of total white wine production, from greatest to least.

You can also check out the California counties with the greatest acres by red wine varietal or white wine varietal

San Joaquin County California White Wine Acres

Monterey County California White Wine Acres

Sonoma County California White Wine Acres

Fresno County California White Wine Acres

Madera County California White Wine Acres

Yolo County California White Wine Acres

Napa County California White Wine Acres

Sacramento County California White Wine Acres

Merced County California White Wine Acres

Santa Barbara County California White Wine Acres

Mendocino County California White Wine Acres

San Luis Obispo County California White Wine Acres

Kern County California White Wine Acres

Lake County California White Wine Acres

Stanislaus County California White Wine Acres

Tulare County California White Wine Acres

Solano County California White Wine Acres

San Benito County California White Wine Acres

Kings County California White Wine Acres

Alameda County California White Wine Acres

Riverside County California White Wine Acres

Contra Costa County California White Wine Acres

Colusa County California White Wine Acres

Santa Clara County California White Wine Acres

El Dorado County California White Wine Acres

Amador County California White Wine Acres

Calaveras County California White Wine Acres

Santa Cruz County California White Wine Acres

Nevada County California White Wine Acres

San Diego County California White Wine Acres

Los Angeles County California White Wine Acres

Marin County California White Wine Acres

San Mateo County California White Wine Acres

Trinity County California White Wine Acres

Placer County California White Wine Acres

Tehama County California White Wine Acres

Humboldt County California White Wine Acres

Mariposa County California White Wine Acres

Shasta County California White Wine Acres

Butte County California White Wine Acres

Ventura County California White Wine Acres

Yuba County California White Wine Acres

Siskiyou County California White Wine Acres

Lassen County California White Wine Acres

Sutter County California White Wine Acres

Glenn County California White Wine Acres

Tuolumne County California White Wine Acres

2021 San Joaquin County White Wine Acres

What white wine grapes were grown in San Joaquin County in 2021?

Rank	Variety	Acres
2021 San Joaquin County White Wine Variety Planted Acres
1	Chardonnay	12393
2	Pinot Gris	4908
3	Sauvignon Blanc	1822
4	Viognier	778
5	Chenin Blanc	630
6	French Colombard	417
7	White Riesling	231
8	Burger	181
9	Muscat Blanc	178
10	Albarino	143
11	Malvasia Bianca	113
12	Symphony	109
13	Semillon	73
14	Sauvignon Musque	71
15	Verdelho	69
16	Gewurztraminer	57
17	Sauvignon Vert	40
18	Catarratto	37
19	Muscat Orange	36
20	Vermentino	32
21	Tocai Friulano	27
22	Grenache Blanc	15
23	Roussanne	13
24	Picpoul Blanc	12
25	Pinot Blanc	0

2021 Monterey County White Wine Acres

What white wine grapes were grown in Monterey County in 2021?

Rank	Variety	Acres
2021 Monterey County White Wine Variety Planted Acres
1	Chardonnay	16763
2	Sauvignon Blanc	1088
3	Pinot Gris	1030
4	White Riesling	746
5	Gewurztraminer	374
6	Viognier	111
7	Gruner Veltliner	101
8	Malvasia Bianca	96
9	Muscat Blanc	78
10	Pinot Blanc	68
11	Albarino	45
12	Roussanne	26
13	Grenache Blanc	24
14	Chenin Blanc	21
15	Sauvignon Musque	16
16	Marsanne	13
17	Picpoul Blanc	11
18	Muscat Orange	5
19	Semillon	4
20	Vermentino	1

2021 Sonoma County White Wine Acres

What white wine grapes were grown in Sonoma County in 2021?

Rank	Variety	Acres
2021 Sonoma County White Wine Variety Planted Acres
1	Chardonnay	15501
2	Sauvignon Blanc	2686
3	Pinot Gris	397
4	Viognier	206
5	Gewurztraminer	99
6	Semillon	98
7	Sauvignon Musque	89
8	Pinot Blanc	84
9	Roussanne	39
10	Grenache Blanc	36
11	White Riesling	30
12	Arneis	28
13	Marsanne	22
14	Chenin Blanc	18
15	French Colombard	18
16	Muscat Blanc	17
17	Catarratto	12
18	Vermentino	11
19	Albarino	8
20	Gruner Veltliner	7
21	Malvasia Bianca	7
22	Sauvignon Vert	5
23	Palomino	4
24	Picpoul Blanc	4
25	Tocai Friulano	2
26	Moscato Gaillo	1
27	Muscat Orange	1

2021 Fresno County White Wine Acres

What white wine grapes were grown in Fresno County in 2021?

Rank	Variety	Acres
2021 Fresno County White Wine Variety Planted Acres
1	French Colombard	8061
2	Chardonnay	2465
3	Muscat Of Alexandria	1858
4	Pinot Gris	1784
5	Chenin Blanc	1511
6	Muscat Blanc	896
7	Burger	760
8	Triplett Blanc	463
9	Symphony	378
10	Grenache Blanc	150
11	Palomino	53
12	Sauvignon Blanc	42
13	Viognier	14
14	Malvasia Bianca	10
15	Albarino	8
16	Vermentino	3
17	Muscat Orange	1
18	St. Emilion	1
19	White Riesling	1

2021 Madera County White Wine Acres

What white wine grapes were grown in Madera County in 2021?

Rank	Variety	Acres
2021 Madera County White Wine Variety Planted Acres
1	French Colombard	5074
2	Chardonnay	4648
3	Pinot Gris	1094
4	Muscat Of Alexandria	499
5	Chenin Blanc	485
6	Malvasia Bianca	284
7	Triplett Blanc	162
8	Muscat Blanc	159
9	Sauvignon Blanc	88
10	St. Emilion	80
11	Symphony	75
12	Gewurztraminer	50
13	White Riesling	48
14	Palomino	43
15	Muscat Orange	33
16	Viognier	12
17	Grenache Blanc	2
18	Marsanne	2
19	Roussanne	2

2021 Yolo County White Wine Acres

What white wine grapes were grown in Yolo County in 2021?

Rank	Variety	Acres
2021 Yolo County White Wine Variety Planted Acres
1	Chardonnay	5781
2	Pinot Gris	1573
3	Sauvignon Blanc	998
4	Chenin Blanc	625
5	White Riesling	425
6	Viognier	281
7	Gewurztraminer	252
8	Albarino	156
9	Semillon	107
10	Muscat Blanc	99
11	French Colombard	72
12	Muscat Orange	37
13	Verdelho	16
14	Vermentino	8
15	Picpoul Blanc	5
16	Grenache Blanc	2
17	Roussanne	1

2021 Napa County White Wine Acres

What white wine grapes were grown in Napa County in 2021?

Rank	Variety	Acres
2021 Napa County White Wine Variety Planted Acres
1	Chardonnay	6671
2	Sauvignon Blanc	2601
3	Semillon	163
4	Sauvignon Musque	117
5	Pinot Gris	112
6	Viognier	111
7	White Riesling	75
8	Muscat Blanc	72
9	Albarino	29
10	Pinot Blanc	21
11	Chenin Blanc	18
12	Roussanne	15
13	Gewurztraminer	12
14	Marsanne	11
15	Muscat Orange	11
16	Grenache Blanc	7
17	Sauvignon Vert	6
18	Vermentino	4
19	Malvasia Bianca	3
20	Catarratto	2
21	St. Emilion	2
22	Picpoul Blanc	1
23	Tocai Friulano	1
24	Verdelho	1

2021 Sacramento County White Wine Acres

What white wine grapes were grown in Sacramento County in 2021?

Rank	Variety	Acres
2021 Sacramento County White Wine Variety Planted Acres
1	Chardonnay	4784
2	Pinot Gris	1669
3	Sauvignon Blanc	1094
4	Chenin Blanc	345
5	Albarino	156
6	White Riesling	72
7	Muscat Blanc	71
8	Viognier	63
9	Gewurztraminer	62
10	Verdelho	33
11	Muscat Orange	25
12	Grenache Blanc	21
13	Semillon	17
14	Symphony	14
15	Gruner Veltliner	8
16	French Colombard	1

2021 Merced County White Wine Acres

What white wine grapes were grown in Merced County in 2021?

Rank	Variety	Acres
2021 Merced County White Wine Variety Planted Acres
1	Chardonnay	3375
2	White Riesling	846
3	Symphony	678
4	Pinot Gris	631
5	Muscat Of Alexandria	500
6	Malvasia Bianca	292
7	French Colombard	230
8	Muscat Blanc	182
9	Sauvignon Blanc	165
10	Burger	50
11	Triplett Blanc	50
12	Viognier	39
13	Catarratto	35
14	Grenache Blanc	3

2021 Santa Barbara County White Wine Acres

What white wine grapes were grown in Santa Barbara County in 2021?

Rank	Variety	Acres
2021 Santa Barbara County White Wine Variety Planted Acres
1	Chardonnay	4237
2	Sauvignon Blanc	809
3	Pinot Gris	500
4	White Riesling	163
5	Viognier	158
6	Roussanne	60
7	Grenache Blanc	53
8	Chenin Blanc	39
9	Gruner Veltliner	18
10	Marsanne	14
11	Semillon	12
12	Gewurztraminer	9
13	Pinot Blanc	8
14	Muscat Blanc	7
15	Tocai Friulano	7
16	Albarino	4
17	Muscat Orange	4
18	Arneis	3
19	Vermentino	3
20	Verdelho	2
21	Malvasia Bianca	1
22	Picpoul Blanc	1

2021 Mendocino County White Wine Acres

What white wine grapes were grown in Mendocino County in 2021?

Rank	Variety	Acres
2021 Mendocino County White Wine Variety Planted Acres
1	Chardonnay	4526
2	Sauvignon Blanc	732
3	Gewurztraminer	123
4	Viognier	123
5	Pinot Gris	94
6	Muscat Blanc	50
7	White Riesling	48
8	French Colombard	37
9	Chenin Blanc	33
10	Pinot Blanc	28
11	Grenache Blanc	20
12	Semillon	16
13	Roussanne	14
14	Vermentino	13
15	Sauvignon Musque	12
16	Arneis	11
17	Muscat Orange	8
18	Tocai Friulano	5
19	Gruner Veltliner	4
20	Marsanne	4
21	Symphony	3
22	Albarino	1
23	Picpoul Blanc	1

2021 San Luis Obispo County White Wine Acres

What white wine grapes were grown in San Luis Obispo County in 2021?

Rank	Variety	Acres
2021 San Luis Obispo County White Wine Variety Planted Acres
1	Chardonnay	2472
2	Sauvignon Blanc	877
3	Pinot Gris	364
4	Viognier	328
5	Chenin Blanc	167
6	Grenache Blanc	131
7	Muscat Blanc	118
8	Albarino	76
9	Roussanne	71
10	Muscat Orange	33
11	Vermentino	21
12	White Riesling	21
13	Gruner Veltliner	15
14	Malvasia Bianca	15
15	Gewurztraminer	13
16	Picpoul Blanc	13
17	Marsanne	12
18	Pinot Blanc	9
19	Verdelho	6
20	St. Emilion	4
21	Arneis	3
22	Semillon	1
23	Tocai Friulano	1

2021 Kern County White Wine Acres

What white wine grapes were grown in Kern County in 2021?

Rank	Variety	Acres
2021 Kern County White Wine Variety Planted Acres
1	French Colombard	1608
2	Chardonnay	1140
3	Muscat Of Alexandria	799
4	Pinot Gris	300
5	Muscat Blanc	289
6	Symphony	95
7	Chenin Blanc	76
8	Viognier	4
9	Sauvignon Blanc	1

2021 Lake County White Wine Acres

What white wine grapes were grown in Lake County in 2021?

Rank	Variety	Acres
2021 Lake County White Wine Variety Planted Acres
1	Sauvignon Blanc	2196
2	Chardonnay	519
3	Pinot Gris	260
4	Muscat Blanc	80
5	Sauvignon Musque	44
6	Semillon	35
7	Viognier	32
8	White Riesling	23
9	Gewurztraminer	16
10	Chenin Blanc	6
11	Roussanne	5
12	Albarino	1
13	Marsanne	1
14	Vermentino	1

2021 Stanislaus County White Wine Acres

What white wine grapes were grown in Stanislaus County in 2021?

Rank	Variety	Acres
2021 Stanislaus County White Wine Variety Planted Acres
1	Chardonnay	1199
2	Pinot Gris	325
3	Sauvignon Blanc	216
4	Chenin Blanc	150
5	Malvasia Bianca	145
6	Muscat Orange	99
7	French Colombard	79
8	Burger	66
9	Viognier	36
10	Pinot Blanc	28
11	Symphony	22
12	Muscat Blanc	9
13	White Riesling	1

2021 Tulare County White Wine Acres

What white wine grapes were grown in Tulare County in 2021?

Rank	Variety	Acres
2021 Tulare County White Wine Variety Planted Acres
1	French Colombard	994
2	Chardonnay	253
3	Muscat Of Alexandria	251
4	Pinot Gris	248
5	Muscat Blanc	226
6	Sauvignon Blanc	40
7	Sauvignon Vert	4

2021 Solano County White Wine Acres

What white wine grapes were grown in Solano County in 2021?

Rank	Variety	Acres
2021 Solano County White Wine Variety Planted Acres
1	Chardonnay	936
2	Pinot Gris	435
3	Chenin Blanc	114
4	Sauvignon Blanc	111
5	White Riesling	58
6	Viognier	47
7	Gewurztraminer	30
8	Muscat Blanc	18
9	Symphony	10
10	French Colombard	8
11	Verdelho	5
12	Albarino	2
13	Malvasia Bianca	2
14	Grenache Blanc	1

2021 San Benito County White Wine Acres

What white wine grapes were grown in San Benito County in 2021?

Rank	Variety	Acres
2021 San Benito County White Wine Variety Planted Acres
1	Chardonnay	577
2	White Riesling	105
3	Sauvignon Blanc	82
4	Pinot Gris	28
5	Viognier	26
6	Marsanne	10
7	Tocai Friulano	7
8	Chenin Blanc	4
9	Grenache Blanc	4
10	Pinot Blanc	3
11	Arneis	2
12	Roussanne	1
13	Vermentino	1

2021 Kings County White Wine Acres

What white wine grapes were grown in Kings County in 2021?

Rank	Variety	Acres
2021 Kings County White Wine Variety Planted Acres
1	French Colombard	320
2	Moscato Gaillo	150
3	Grenache Blanc	123
4	Pinot Gris	118
5	Muscat Of Alexandria	30
6	Muscat Blanc	29
7	Burger	18

2021 Alameda County White Wine Acres

What white wine grapes were grown in Alameda County in 2021?

Rank	Variety	Acres
2021 Alameda County White Wine Variety Planted Acres
1	Chardonnay	635
2	Sauvignon Blanc	76
3	Viognier	7
4	Semillon	6
5	Grenache Blanc	5
6	Pinot Blanc	5
7	Pinot Gris	4
8	Muscat Orange	3
9	Roussanne	2
10	Verdelho	2
11	Albarino	1
12	Muscat Blanc	1

2021 Riverside County White Wine Acres

What white wine grapes were grown in Riverside County in 2021?

Rank	Variety	Acres
2021 Riverside County White Wine Variety Planted Acres
1	Chardonnay	101
2	Sauvignon Blanc	48
3	Muscat Blanc	45
4	Viognier	43
5	Palomino	38
6	White Riesling	31
7	Pinot Gris	20
8	Roussanne	16
9	Gewurztraminer	12
10	Vermentino	10
11	Arneis	6
12	Grenache Blanc	6
13	Albarino	5
14	Chenin Blanc	4
15	Muscat Orange	4
16	Semillon	4
17	Pinot Blanc	3
18	Marsanne	2
19	Verdelho	2
20	Muscat Of Alexandria	1

2021 Contra Costa County White Wine Acres

What white wine grapes were grown in Contra Costa County in 2021?

Rank	Variety	Acres
2021 Contra Costa County White Wine Variety Planted Acres
1	Chardonnay	245
2	Sauvignon Blanc	57
3	Pinot Gris	50
4	Viognier	10
5	Palomino	6
6	Muscat Blanc	4
7	Muscat Of Alexandria	4
8	Semillon	3
9	Malvasia Bianca	2
10	Marsanne	2
11	Roussanne	2

2021 Colusa County White Wine Acres

What white wine grapes were grown in Colusa County in 2021?

Rank	Variety	Acres
2021 Colusa County White Wine Variety Planted Acres
1	Muscat Of Alexandria	200
2	Chardonnay	165

2021 Santa Clara County White Wine Acres

What white wine grapes were grown in Santa Clara County in 2021?

Rank	Variety	Acres
2021 Santa Clara County White Wine Variety Planted Acres
1	Chardonnay	250
2	Gewurztraminer	60
3	Sauvignon Blanc	12
4	Viognier	10
5	Pinot Gris	7
6	Marsanne	4
7	White Riesling	3
8	Malvasia Bianca	2
9	Semillon	2
10	Grenache Blanc	1
11	Muscat Blanc	1
12	Palomino	1
13	Roussanne	1
14	Chenin Blanc	0

2021 El Dorado County White Wine Acres

What white wine grapes were grown in El Dorado County in 2021?

Rank	Variety	Acres
2021 El Dorado County White Wine Variety Planted Acres
1	Chardonnay	105
2	Viognier	52
3	Sauvignon Blanc	45
4	Roussanne	23
5	Grenache Blanc	16
6	Pinot Gris	16
7	Muscat Blanc	13
8	White Riesling	13
9	Vermentino	12
10	Marsanne	9
11	Picpoul Blanc	8
12	Gewurztraminer	5
13	Chenin Blanc	3
14	Sauvignon Musque	3
15	Semillon	3
16	Muscat Of Alexandria	2
17	Arneis	1
18	Moscato Gaillo	1
19	Pinot Blanc	1
20	Albarino	0

2021 Amador County White Wine Acres

What white wine grapes were grown in Amador County in 2021?

Rank	Variety	Acres
2021 Amador County White Wine Variety Planted Acres
1	Viognier	56
2	Chardonnay	46
3	Sauvignon Blanc	44
4	Muscat Orange	17
5	Pinot Gris	16
6	Roussanne	16
7	Verdelho	9
8	Vermentino	8
9	Semillon	6
10	Chenin Blanc	4
11	Albarino	3
12	Marsanne	3
13	Muscat Blanc	3
14	Grenache Blanc	2

2021 Calaveras County White Wine Acres

What white wine grapes were grown in Calaveras County in 2021?

Rank	Variety	Acres
2021 Calaveras County White Wine Variety Planted Acres
1	Sauvignon Blanc	79
2	Chardonnay	69
3	Viognier	18
4	Albarino	12
5	Muscat Blanc	9
6	Pinot Gris	8
7	Chenin Blanc	6
8	Symphony	3
9	Roussanne	2
10	Semillon	2
11	Verdelho	2
12	Malvasia Bianca	1
13	Marsanne	1
14	Picpoul Blanc	1
15	Vermentino	1

2021 Santa Cruz County White Wine Acres

What white wine grapes were grown in Santa Cruz County in 2021?

Rank	Variety	Acres
2021 Santa Cruz County White Wine Variety Planted Acres
1	Chardonnay	151
2	White Riesling	7
3	Chenin Blanc	3
4	Pinot Gris	3
5	Gruner Veltliner	2
6	Roussanne	1

2021 Nevada County White Wine Acres

What white wine grapes were grown in Nevada County in 2021?

Rank	Variety	Acres
2021 Nevada County White Wine Variety Planted Acres
1	Chardonnay	78
2	Sauvignon Blanc	13
3	Semillon	7
4	Viognier	7
5	Marsanne	3
6	Pinot Gris	3
7	Roussanne	3
8	White Riesling	2

2021 San Diego County White Wine Acres

What white wine grapes were grown in San Diego County in 2021?

Rank	Variety	Acres
2021 San Diego County White Wine Variety Planted Acres
1	Viognier	26
2	Chardonnay	22
3	Sauvignon Blanc	15
4	Muscat Blanc	9
5	Pinot Gris	7
6	Grenache Blanc	5
7	Marsanne	4
8	Roussanne	4
9	Albarino	3
10	Picpoul Blanc	3
11	White Riesling	3
12	Arneis	2
13	Malvasia Bianca	2
14	Muscat Of Alexandria	2
15	St. Emilion	2
16	Muscat Orange	1
17	Vermentino	1

2021 Los Angeles County White Wine Acres

What white wine grapes were grown in Los Angeles County in 2021?

Rank	Variety	Acres
2021 Los Angeles County White Wine Variety Planted Acres
1	St. Emilion	13
2	Chardonnay	11
3	Symphony	6
4	Sauvignon Blanc	3
5	Pinot Gris	2
6	Muscat Blanc	1
7	Semillon	1

2021 Marin County White Wine Acres

What white wine grapes were grown in Marin County in 2021?

Rank	Variety	Acres
2021 Marin County White Wine Variety Planted Acres
1	Chardonnay	32
2	White Riesling	4
3	Viognier	1

2021 San Mateo County White Wine Acres

What white wine grapes were grown in San Mateo County in 2021?

Rank	Variety	Acres
2021 San Mateo County White Wine Variety Planted Acres
1	Chardonnay	31
2	Gruner Veltliner	1
3	Sauvignon Blanc	0

2021 Trinity County White Wine Acres

What white wine grapes were grown in Trinity County in 2021?

Rank	Variety	Acres
2021 Trinity County White Wine Variety Planted Acres
1	Chardonnay	25
2	Gewurztraminer	3
3	White Riesling	3
4	Pinot Gris	1

2021 Placer County White Wine Acres

What white wine grapes were grown in Placer County in 2021?

Rank	Variety	Acres
2021 Placer County White Wine Variety Planted Acres
1	Viognier	10
2	Sauvignon Blanc	4
3	Roussanne	1
4	Verdelho	1

2021 Tehama County White Wine Acres

What white wine grapes were grown in Tehama County in 2021?

Rank	Variety	Acres
2021 Tehama County White Wine Variety Planted Acres
1	Albarino	4
2	Viognier	4
3	Sauvignon Blanc	2
4	French Colombard	1
5	Gewurztraminer	1
6	Pinot Gris	1
7	St. Emilion	1

2021 Humboldt County White Wine Acres

What white wine grapes were grown in Humboldt County in 2021?

Rank	Variety	Acres
2021 Humboldt County White Wine Variety Planted Acres
1	Chardonnay	5
2	Pinot Gris	3
3	Sauvignon Blanc	3
4	White Riesling	1

2021 Mariposa County White Wine Acres

What white wine grapes were grown in Mariposa County in 2021?

Rank	Variety	Acres
2021 Mariposa County White Wine Variety Planted Acres
1	Chardonnay	8
2	Viognier	2
3	White Riesling	1

2021 Shasta County White Wine Acres

What white wine grapes were grown in Shasta County in 2021?

Rank	Variety	Acres
2021 Shasta County White Wine Variety Planted Acres
1	Chardonnay	3
2	Viognier	3
3	White Riesling	2
4	French Colombard	1

2021 Butte County White Wine Acres

What white wine grapes were grown in Butte County in 2021?

Rank	Variety	Acres
2021 Butte County White Wine Variety Planted Acres
1	Pinot Gris	2
2	Viognier	2
3	Sauvignon Blanc	1
4	Symphony	1
5	Verdelho	1

2021 Ventura County White Wine Acres

What white wine grapes were grown in Ventura County in 2021?

Rank	Variety	Acres
2021 Ventura County White Wine Variety Planted Acres
1	Viognier	2
2	Chardonnay	1
3	French Colombard	1
4	Roussanne	1
5	Sauvignon Blanc	1

2021 Yuba County White Wine Acres

What white wine grapes were grown in Yuba County in 2021?

Rank	Variety	Acres
2021 Yuba County White Wine Variety Planted Acres
1	Chardonnay	1
2	Roussanne	1
3	Semillon	1
4	Viognier	1
5	White Riesling	1

2021 Siskiyou County White Wine Acres

What white wine grapes were grown in Siskiyou County in 2021?

Rank	Variety	Acres
2021 Siskiyou County White Wine Variety Planted Acres
1	Pinot Gris	2
2	Chardonnay	1
3	White Riesling	1

2021 Lassen County White Wine Acres

What white wine grapes were grown in Lassen County in 2021?

Rank	Variety	Acres
2021 Lassen County White Wine Variety Planted Acres
1	Chardonnay	2

2021 Sutter County White Wine Acres

What white wine grapes were grown in Sutter County in 2021?

Rank	Variety	Acres
2021 Sutter County White Wine Variety Planted Acres
1	Grenache Blanc	1
2	Roussanne	1

2021 Glenn County White Wine Acres

What white wine grapes were grown in Glenn County in 2021?

Rank	Variety	Acres
2021 Glenn County White Wine Variety Planted Acres
1	Viognier	1

2021 Tuolumne County White Wine Acres

What white wine grapes were grown in Tuolumne County in 2021?

Rank	Variety	Acres
2021 Tuolumne County White Wine Variety Planted Acres
1	Muscat Blanc	1

Top 10 California Red Wine Grape Acres

Jan Dutton — Sun, 19 Jun 2022 14:14:41 +0000

2021 California Red Wine Grape Acres

Cabernet Sauvignon California Acres

Pinot Noir California Acres

Zinfandel California Acres

Merlot California Acres

Syrah California Acres

Petite Sirah California Acres

Rubired California Acres

Barbera California Acres

Grenache California Acres

Malbec California Acres

Be sure to also review the Top 10 California White Varieties by Acres as Well

Top 10 2021 Red Grape Varieties in California by Acres

California is by far the state with the largest wine production in the United States.

According to the 2021 USDA California grape acreage report, there was a total of 288,348 acres of white wine grapes in California in 2021.

The top ten 2021 red grape planted varieties in California are shown below.

Rank	Variety	Total Acres
Top 10 2021 California Red Wine Variety Planted Acres
1	Cabernet Sauvignon	95513
2	Pinot Noir	47247
3	Zinfandel	38969
4	Merlot	34672
5	Syrah	14753
6	Petite Sirah	11670
7	Rubired	9800
8	Barbera	4635
9	Grenache	4431
10	Malbec	3900

2021 California Planted Cabernet Sauvignon Acres

How many acres of Cabernet Sauvignon are grown in California?

A total of 95,513 acres of Cabernet Sauvignon were grown in California in 2021.

Which county in California grows the most Cabernet Sauvignon by acreage?

According to the 2021 USDA California grape acreage report, Napa is the top producing county of Cabernet Sauvignon with 22494 acres.

The total number of Cabernet Sauvignon planted acres by county in California is shown below

The total number of acres for the top two counties of the Cabernet Sauvignon varietal are also shown.

2021 California Planted Pinot Noir Acres

How many acres of Pinot Noir are grown in California?

A total of 47,247 acres of Pinot Noir were grown in California in 2021.

Which county in California grows the most Pinot Noir by acreage?

According to the 2021 USDA California grape acreage report, Sonoma is the top producing county of Pinot Noir with 12872 acres.

The total number of Pinot Noir planted acres by county in California is shown below

The total number of acres for the top two counties of the Pinot Noir varietal are also shown.

2021 California Planted Zinfandel Acres

How many acres of Zinfandel are grown in California?

A total of 38,969 acres of Zinfandel were grown in California in 2021.

Which county in California grows the most Zinfandel by acreage?

According to the 2021 USDA California grape acreage report, San Joaquin is the top producing county of Zinfandel with 15246 acres.

The total number of Zinfandel planted acres by county in California is shown below

The total number of acres for the top two counties of the Zinfandel varietal are also shown.

2021 California Planted Merlot Acres

How many acres of Merlot are grown in California?

A total of 34,672 acres of Merlot were grown in California in 2021.

Which county in California grows the most Merlot by acreage?

According to the 2021 USDA California grape acreage report, San Joaquin is the top producing county of Merlot with 6806 acres.

The total number of Merlot planted acres by county in California is shown below

The total number of acres for the top two counties of the Merlot varietal are also shown.

2021 California Planted Syrah Acres

How many acres of Syrah are grown in California?

A total of 14,753 acres of Syrah were grown in California in 2021.

Which county in California grows the most Syrah by acreage?

According to the 2021 USDA California grape acreage report, San Luis Obispo is the top producing county of Syrah with 2120 acres.

The total number of Syrah planted acres by county in California is shown below

The total number of acres for the top two counties of the Syrah varietal are also shown.

2021 California Planted Petite Sirah Acres

How many acres of Petite Sirah are grown in California?

A total of 11,670 acres of Petite Sirah were grown in California in 2021.

Which county in California grows the most Petite Sirah by acreage?

According to the 2021 USDA California grape acreage report, San Joaquin is the top producing county of Petite Sirah with 2899 acres.

The total number of Petite Sirah planted acres by county in California is shown below

The total number of acres for the top two counties of the Petite Sirah varietal are also shown.

2021 California Planted Rubired Acres

How many acres of Rubired are grown in California?

A total of 9,800 acres of Rubired were grown in California in 2021.

Which county in California grows the most Rubired by acreage?

According to the 2021 USDA California grape acreage report, Fresno is the top producing county of Rubired with 4545 acres.

The total number of Rubired planted acres by county in California is shown below

The total number of acres for the top two counties of the Rubired varietal are also shown.

2021 California Planted Barbera Acres

How many acres of Barbera are grown in California?

A total of 4,635 acres of Barbera were grown in California in 2021.

Which county in California grows the most Barbera by acreage?

According to the 2021 USDA California grape acreage report, Fresno is the top producing county of Barbera with 2605 acres.

The total number of Barbera planted acres by county in California is shown below

The total number of acres for the top two counties of the Barbera varietal are also shown.

2021 California Planted Grenache Acres

How many acres of Grenache are grown in California?

A total of 4,431 acres of Grenache were grown in California in 2021.

Which county in California grows the most Grenache by acreage?

According to the 2021 USDA California grape acreage report, Madera is the top producing county of Grenache with 1039 acres.

The total number of Grenache planted acres by county in California is shown below

The total number of acres for the top two counties of the Grenache varietal are also shown.

2021 California Planted Malbec Acres

How many acres of Malbec are grown in California?

A total of 3,900 acres of Malbec were grown in California in 2021.

Which county in California grows the most Malbec by acreage?

According to the 2021 USDA California grape acreage report, San Joaquin is the top producing county of Malbec with 960 acres.

The total number of Malbec planted acres by county in California is shown below

The total number of acres for the top two counties of the Malbec varietal are also shown.

California 2021 Top 10 White Wine Grape Variety Acres

Jan Dutton — Sat, 18 Jun 2022 19:49:18 +0000

2021 California White Wine Grape Acres

Chardonnay California Acres

French Colombard California Acres

Sauvignon Blanc California Acres

Pinot Gris California Acres

Chenin Blanc California Acres

Muscat Of Alexandria California Acres

Other White Wine California Acres

White Riesling California Acres

Muscat Blanc California Acres

Viognier California Acres

Be sure to also review the Top 10 California Red Varieties by Acres as Well

Top 10 2021 White Grape Varieties in California by Acres

California is by far the state with the largest wine production in the United States.

According to the 2021 USDA California grape acreage report, there was a total of 169,594 acres of white wine grapes in California in 2021.

The top ten 2021 white grape planted varieties in California are shown below.

Rank	Variety	Total Acres
Top 10 2021 California White Wine Variety Planted Acres
1	Chardonnay	90227
2	French Colombard	16922
3	Sauvignon Blanc	16051
4	Pinot Gris	16015
5	Chenin Blanc	4262
6	Muscat Of Alexandria	4146
7	Other White Wine	4066
8	White Riesling	2965
9	Muscat Blanc	2665
10	Viognier	2624

2021 California Planted Chardonnay Acres

How many acres of Chardonnay are grown in California?

A total of 90,227 acres of Chardonnay were grown in California in 2021.

Which county in California grows the most Chardonnay by acreage?

According to the 2021 USDA California grape acreage report, Monterey is the top producing county of Chardonnay with 16763 acres.

The total number of Chardonnay planted acres by county in California is shown below

The total number of acres for the top two counties of the Chardonnay varietal are also shown.

2021 California Planted French Colombard Acres

How many acres of French Colombard are grown in California?

A total of 16,922 acres of French Colombard were grown in California in 2021.

Which county in California grows the most French Colombard by acreage?

According to the 2021 USDA California grape acreage report, Fresno is the top producing county of French Colombard with 8061 acres.

The total number of French Colombard planted acres by county in California is shown below

The total number of acres for the top two counties of the French Colombard varietal are also shown.

2021 California Planted Sauvignon Blanc Acres

How many acres of Sauvignon Blanc are grown in California?

A total of 16,051 acres of Sauvignon Blanc were grown in California in 2021.

Which county in California grows the most Sauvignon Blanc by acreage?

According to the 2021 USDA California grape acreage report, Sonoma is the top producing county of Sauvignon Blanc with 2686 acres.

The total number of Sauvignon Blanc planted acres by county in California is shown below

The total number of acres for the top two counties of the Sauvignon Blanc varietal are also shown.

2021 California Planted Pinot Gris Acres

How many acres of Pinot Gris are grown in California?

A total of 16,015 acres of Pinot Gris were grown in California in 2021.

Which county in California grows the most Pinot Gris by acreage?

According to the 2021 USDA California grape acreage report, San Joaquin is the top producing county of Pinot Gris with 4908 acres.

The total number of Pinot Gris planted acres by county in California is shown below

The total number of acres for the top two counties of the Pinot Gris varietal are also shown.

2021 California Planted Chenin Blanc Acres

How many acres of Chenin Blanc are grown in California?

A total of 4,262 acres of Chenin Blanc were grown in California in 2021.

Which county in California grows the most Chenin Blanc by acreage?

According to the 2021 USDA California grape acreage report, Fresno is the top producing county of Chenin Blanc with 1511 acres.

The total number of Chenin Blanc planted acres by county in California is shown below

The total number of acres for the top two counties of the Chenin Blanc varietal are also shown.

2021 California Planted Muscat Of Alexandria Acres

How many acres of Muscat Of Alexandria are grown in California?

A total of 4,146 acres of Muscat Of Alexandria were grown in California in 2021.

Which county in California grows the most Muscat Of Alexandria by acreage?

According to the 2021 USDA California grape acreage report, Fresno is the top producing county of Muscat Of Alexandria with 1858 acres.

The total number of Muscat Of Alexandria planted acres by county in California is shown below

The total number of acres for the top two counties of the Muscat Of Alexandria varietal are also shown.

2021 California Planted Other White Wine Acres

How many acres of Other White Wine are grown in California?

A total of 4,066 acres of Other White Wine were grown in California in 2021.

Which county in California grows the most Other White Wine by acreage?

According to the 2021 USDA California grape acreage report, is the top producing county of with acres.

The total number of Other White Wine planted acres by county in California is shown below

The total number of acres for the top two counties of the Other White Wine varietal are also shown.

2021 California Planted White Riesling Acres

How many acres of White Riesling are grown in California?

A total of 2,965 acres of White Riesling were grown in California in 2021.

Which county in California grows the most White Riesling by acreage?

According to the 2021 USDA California grape acreage report, Merced is the top producing county of White Riesling with 846 acres.

The total number of White Riesling planted acres by county in California is shown below

The total number of acres for the top two counties of the White Riesling varietal are also shown.

2021 California Planted Muscat Blanc Acres

How many acres of Muscat Blanc are grown in California?

A total of 2,665 acres of Muscat Blanc were grown in California in 2021.

Which county in California grows the most Muscat Blanc by acreage?

According to the 2021 USDA California grape acreage report, Fresno is the top producing county of Muscat Blanc with 896 acres.

The total number of Muscat Blanc planted acres by county in California is shown below

The total number of acres for the top two counties of the Muscat Blanc varietal are also shown.

2021 California Planted Viognier Acres

How many acres of Viognier are grown in California?

A total of 2,624 acres of Viognier were grown in California in 2021.

Which county in California grows the most Viognier by acreage?

According to the 2021 USDA California grape acreage report, San Joaquin is the top producing county of Viognier with 778 acres.

The total number of Viognier planted acres by county in California is shown below

The total number of acres for the top two counties of the Viognier varietal are also shown.

The Ashenfelter Wine Quality Index [1950-2020]

Jan Dutton — Mon, 27 Dec 2021 14:51:36 +0000

The Ashenfelter wine quality index created waves of controversy in the wine industry when it was released. In the June 2008 edition of The Economic Journal, Princeton economist Orley Ashenfelter published “Predicting the Quality and Prices of Bordeaux Wine.” You can read the article here. The premise of the article is that weather conditions during the Bordeaux wine season play a substantial role in establishing each vintage’s quality, as indicated by its market price.

This information had been in the market for some time, however. For example, a 1990 New York Times article discusses his finding. His work eventually gained Dr. Ashenfelter visibility because of the conflict it seemingly created with wine experts such as Robert Parker. Mr. Parker is quoted in the NYT article calling Dr. Ashenfelter’s premise “ludicrous and absurd.”

Predicting the Quality and Prices of Bordeaux Wine

Growing grapes to produce wine is an agricultural activity. This means the weather conditions during the growing season impacts the final quality of the product once it’s in the bottle. Ashenfelter’s paper is a regression-based analysis of relating the price of premier Bordeaux wines to the weather conditions (i.e., the Bordeaux wine climate) during a specific vintage.

The 1990 and 1991 prices of London auction wine price data for wines produced in the 1950s to 1980s were secured along with weather data from the Bordeaux-Merignac airport. Regression analysis demonstrates the importance of weather conditions to the quality of the Bordeaux wine, which is assumed to be reflected in its price. The idea that emerges is that the quality of a Bordeaux vintage can be predicted using weather data alone.

The Original Work

The regression analysis in the article demonstrates the price of the premier Bordeaux wines can be modeled using the following equation:
Quality of Wine =
0.240 * Age of Vintage +
0.608 * Average Temperatures during the April to September Growing Season +
-0.00380 * Total August Precipitation +
0.00115 * Total Precipitation during the preceding winter (October to March) +
0.00765 * September Average Temperatures

A key aspect of this equation is the first term. It says the quality of wine increases with age. This comes as no surprise to anyone familiar with evaluating and drinking Bordeaux’s premier wines.

It turns out the data used in the study has been published online and used in a statistics tutorial. Since it’s readily available I’ve accessed it and used it in the remainder of this post.

Bordeaux Wine Price vs. Age. This figure recreates Ashenfelter’s Figure 1.

The red line shows the result of linear regression on only the age of the vintage versus it’s age.

The paper only lightly documents the methodology of the analysis. For example, the source of the weather station data is not provided. The data for the Bordeaux-Merignac airport is certainly available if one digs deep enough and is willing to pay for it.

Bordeaux Weather: A Different Source

In this post, I seek to recreate the results of the regression analysis but also reformulate the wine quality index based on what I perceive as a few shortcomings of the methodology. For Bordeaux weather data, I reanalysis data rather than the observed weather station data. Reanalyses, such as the ECMWF ERA5, is a numerical recreation of observed weather data using modern weather forecast modeling technology. The model is run for earlier dates and the solution is forced by the known weather station, radiosonde, satellite, and other sources of observed weather conditions. The ERA5 data is available from 1950 to today.

How valid is it to use the ERA5 data? To answer that, I recreate Figure 2 from the Ashenfelter paper. It shows the relationship between “Summer Temperature” and “Harvest Rain.” Given the regression coefficient descriptions in the paper, I assume this means the April to September temperatures and the September total precipitation.

The graphic below recreates Ashenfelter’s Figure 2. In this case, the temperature and precipitation data have been “centered,” meaning the time-series average of both variables has been removed. Each data point style displays if the original price of the wine that year was above or below normal. We see (note the Y-axis is reversed) that relatively warm summers and lower than normal harvest precipitation generates higher than normal prices.

A recreation of Ashenfelter’s Figure 2 but with ERA5 data.

Using the ERA5 data we can apply Ashenfelter’s equation to look at the quality of more recent Bordeaux vintages. In this case, the first component of the equation relating the age to price is not used. In other words, I’m applying the second through the fifth regression coefficients to a history of ERA5 data to estimate the quality of Bordeaux red wine in each year up to 2020.

Using Ashenfelter’s regression to create a Bordeaux wine index.

The index time series shows that higher-quality wines have happened more frequently in the past 20 years than in the prior 40 years. Recall the largest coefficient in the regression equation was applied to the growing season temperature term. The index, therefore, is particularly sensitive to changes in temperature.

The recreation of Ashenefelter’s Figure 2 shown above uses data only from 1952 to 1980. We can add the years after 1980 to the graphic.

Ashenfelter Figure 2 but including all years up to 2020.

In this case, each data point is labeled by the last two digits of the year and color-coded to represent the years greater than 1980 in blue. The majority of blue dots are to the right of the red dots meaning the growing season temperatures were higher than the group of years used to create the original graphic. In other words, the wine-growing season average temperatures have increased over the past 70 years. And, because the regression equation is dominated by the growing season temperature term and the summers are warming the quality index gradually increases.

It might be necessary to reformulate Ashenfelter’s regression.

Revisiting Ashenfelter’s Wine Quality Index

Unfortunately, the paper does not provide much detail regarding analytical methodology. But we can infer quite a bit of information from the graphs and the regression results shown. For example, it appears the data was not normalized before being used in the regression analysis. Normalization of the data removes the average value of each variable’s time series and divides it by its standard deviation. The result is a data set in which the average of each time series is zero and the values represent the deviation in standard deviations.

The regression equation as presented in the paper makes it difficult to compare the relative importance of one term relative to another. In other words, is the summer average temperatures more or less important than the harvest total precipitation? We don’t know because the data is normalized.

Normalizing the data and calculating the regression again allows us to compare the relative importance of the different factors. We’ll recalculate the regression results but we want to isolate the impact of weather on wine quality. To achieve that goal we’ll first correct the original wine pricing data for its time dependency.

Correcting the Price of Wine for Time

The first graph of this post shows the relationship between the age of the vintage and the price of the wine. Ashenfelter regression documents that the slope of the red line is that the price changes by 0.0354 GBP for each year of vintage age. We can use this information to control for the impact of age on the price of wine.

Corrected Bordeaux Wine Price for Age

Correcting the wine price data for age removes the age dependency. What remains in the price data is theoretically the impact of weather conditions on the quality of the red wine.

Updated Regression

The regression results below are calculated using the time-correct wine auction pricing data but with the ERA5 weather data for Bordeaux.

Weather vs Bordeaux Wine Price Regression Results

Because the data was normalized before being used in the model, we can compare the relative importance of the regression coefficients to predict the quality of Bordeaux white wine. The coefficients have been rounded to facilitate the presentation. The most important factor determining the price of Bordeaux wine is growing season temperature, followed by winter precipitation, then September temperatures, followed by August precipitation.

The results are interesting. Above normal precipitation during the winter and in August are negative factors for price. Growing season and September temperatures are positive factors for price. The negative coefficient on winter precipitation is opposite to the finding of Ashenfelter in the original paper.

The original Ashenfelter paper suggests a slightly positive impact of increased wintertime precipitation. This result suggests winter precipitation does not help to increase wine prices.

Bordeaux Wine Quality: A New Formula

Using the wine price regression results with the ERA5 weather data for Bordeaux yields a new formula to estimate Bordeaux wine quality. That formula is:

Wine Quality ~
0.15 * Winter Precipitation +
0.45 * Growing Season Temperature +
0.03 * August Precipitation +
0.17 * September Temperatures

Bordeaux Wine Quality Index: 1950 – 2020

Using this new formula we create a new wine quality index that is independent of the age of the vintage and includes the relative importance of the weather factors. It is shown below. Note the new formula suggests the August precipitation has almost no importance relative to the other factors.

New Weather Wine Quality Index for Bordeaux Red Wine

The new index still suggests the more recent vintages are of higher quality than prior vintages. This is certainly because the average growing season temperatures have increased since the 1950s and 1960s. Comparing this graph to the index based on Ashenfelter’s regression results, however, we see less impact from temperatures in recent years because the index values are not quite as extreme.

The new Bordeaux red wine quality index suggests 2003 is the best year on record and that 2020 and 2018 are not far behind. Does that hold true? The Wine Cellar Insider describes the 2003 vintage as a “scorched, hot, dry growing season.” Bordeaux experienced extreme temperatures in 2003 and the revised index is certainly picking up that signal in the growing season average temperature.

The Buyer, however, quotes Guy Seddon as saying “Bordeaux 2020 is good. It’s really good. But coming hot on the heels of two strong vintages, we’re going to need some convincing.” So, at least there is an indication from Guy Seddon the index is working and accurately assess wine quality in recent years.

The index also ranks 1990 as a decent year. The Wine Spectator gives the 1990 Chateau Latour (which I’ve had the pleasure of enjoying) 100 of 100 points and listed it as the #1 wine released in 1993. Further evidence that while the index contains useful information temperature trends may make the index less useful.

Temperatures in the Bordeaux region are going to increase for the rest of our lifetimes. At some point, the increasing temperatures will become damaging to Bordeaux’s red wine quality. That factor is not represented in the regression equation.

Finally, it might be helpful to rank the years of the index.

The Bordeaux Wine Quality Index: Sorted by Value

Top 10 Bordeaux Vintages

The top 10 Bordeaux vintages as predicted by the wine weather quality index is shown below.

Top 10 Bordeaux Vintages based on the Wine Quality Index

The Ashenfelter wine quality index creates waves of controversy when it was first introduced. This post reevaluated the index while correcting for a few issues in an effort to improve it. Once reconstituted, we can calculate the top 10 Bordeaux vintages.

Wine Production By State [2012-2020]

Jan Dutton — Sat, 18 Dec 2021 18:37:24 +0000

Total Wine Production: United States

The US Alcohol and Tabacco Tax and Trade Bureau regulates wine production in the United States. In that function, they produce a set of interesting wine production statistics. The format of the data is inconvenient (two PDFs with different layouts depending on the year and month), but with a bit of data science, I’ve managed to collate the data for analysis.

According to the data, the United States produced 722.5 million gallons of bottled wine in 2020. Annual wine production from 2012 to 2020 is shown in the table below.

US Bottled Wine Production by Year (Millions of Gallons)
Data provided by the US TTB
Year	Total
2012	620.7
2013	652.2
2014	686.9
2015	698.7
2016	698.8
2017	711.1
2018	661.2
2019	738.8
2020	722.5

US Wine Production by Month

The data is monthly, so we can examine wine production by month. Overall wine production has been increasing over time. Using linear regression, we estimate the annual increase in wine production is approximately 56,700 gallons per year.

Total US Bottled Wine Production (Millions of Gallons)

California Wine Production

California is by far (shown below) most significant wine-producing state. The graphic below shows California produces 47 million gallons of wine per month, although there is month-to-month variations. The lighter blue line depicts the slope of the increase of wine production in California. Wine production in California is increasing at 643,000 gallons per year since 2012.

California Bottled Wine Production (millions of gallons)

California Wine Production Relative to Other States

California is the behemoth of US wine production, as shown below. No other states comes close to rivaling wine production in California. California undoubtedly has an excellent wine climate.

California Bottled Wine Production Relative To All Other States (millions of gallons)

The TTB wine production data indicates that all other states produce, on average, 24% as much bottled wine as California. The graphic below shows both total wine production for all other states and it’s fraction relative to California production by month.

All Other States Wine Production as a Fraction of California Wine Production

Wine Production: Other States

What are the other top wine producing states in the United States? The #2 to #7 bottled wine-producing states by month are shown below.

Wine Production by State and Month for the Rank 2 through Rank 7 Producing States

The graphic above can be simplified by examining state wine production by year.

Wine Production by State and Year for the Rank 2 through Rank 7 WIne Producing States.

Wine Production by State [and Year]

In summary, California is the dominant producer of wine in the United States, shown in the table below providing the wine-producing statistics by state and year since 2012. This US TTB wine production by state data is hopefully useful for you.

Bottled Wine Production by State by Year (Millions of Gallons)
Data provided by the US TTB
State	2012	2013	2014	2015	2016	2017	2018	2019	2020
California	517.6	533.4	543.3	550.6	560.6	569.7	525.0	588.8	579.9
New York	33.2	32.2	38.2	33.9	32.5	31.3	29.0	31.2	29.1
Washington	22.5	25.2	29.3	33.2	29.9	31.3	27.6	29.1	26.8
Pennsylvania	9.3	18.9	29.1	29.0	25.5	24.9	25.3	26.8	23.1
Oregon	5.6	7.0	8.5	10.3	10.4	10.7	10.5	13.2	12.0
Texas	2.5	2.2	2.4	3.0	3.2	5.0	5.0	6.3	7.8
Ohio	3.6	5.3	7.5	9.9	8.7	7.9	5.5	6.7	5.4
Florida	1.8	1.6	1.2	1.2	1.4	1.3	2.9	2.8	4.3
Michigan	1.5	1.9	2.2	2.3	2.3	2.6	2.9	3.5	3.7
North Carolina	1.4	1.6	1.6	1.7	2.5	3.2	2.8	3.6	3.4
Vermont	8.9	9.2	7.4	6.9	4.9	4.2	3.5	4.3	3.3
Indiana	1.6	1.6	1.5	2.0	2.2	2.4	2.3	2.5	3.3
Wisconsin	1.1	1.3	1.2	1.4	1.6	1.9	2.1	3.2	3.1
Virginia	1.1	1.3	1.7	1.5	2.1	2.7	2.4	2.3	2.6
Massachusetts	0.2	0.3	0.5	0.9	1.0	1.3	1.5	1.8	2.1
Illinois	1.1	1.3	1.1	1.1	1.2	1.6	1.8	2.0	2.0
Kentucky	0.2	0.2	0.2	0.2	0.2	0.3	0.7	1.1	1.8
New Jersey	1.0	1.0	1.2	1.2	1.3	1.2	1.3	1.5	1.3
Missouri	1.1	1.1	1.2	1.2	1.3	1.2	1.5	1.2	1.1
Colorado	0.3	0.3	0.4	0.5	0.4	0.5	0.8	0.8	0.8
Minnesota	0.9	0.7	0.2	0.2	0.3	0.4	0.5	0.4	0.6
Tennessee	0.3	1.2	4.3	3.5	2.3	1.8	1.9	0.9	0.5
Maine	0.1	0.0	0.1	0.1	0.1	0.2	0.6	0.5	0.5
Maryland	0.4	0.3	0.3	0.4	0.4	0.5	0.5	0.4	0.5
Idaho	0.4	0.5	0.4	0.5	0.4	0.5	0.4	0.4	0.5
New Mexico	0.3	0.3	0.4	0.3	0.4	0.4	0.5	0.7	0.4
Georgia	0.1	0.1	0.2	0.2	0.2	0.3	0.2	0.3	0.3
Louisiana	1.2	0.5	0.2	0.1	0.1	0.1	0.0	0.1	0.3
Arkansas	0.3	0.4	0.4	0.3	0.4	0.3	0.2	0.3	0.2
New Hampshire	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.2	0.2
Iowa	0.2	0.2	0.2	0.2	0.3	0.3	0.3	0.3	0.2
Nebraska	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.2	0.2
Arizona	0.1	0.2	0.1	0.1	0.1	0.2	0.2	0.2	0.2
Connecticut	0.1	0.1	0.1	0.2	0.1	0.2	0.1	0.2	0.2
Montana	0.0	0.0	0.0	0.0	0.0	0.1	0.1	0.1	0.2
Kansas	0.1	0.0	0.1	0.1	0.1	0.1	0.1	0.1	0.1
Alaska	NA	NA	NA	NA	NA	0.0	0.0	0.0	0.1
Rhode Island	NA	NA	NA	NA	NA	0.0	0.1	0.1	0.1
District Of Columbia	NA	NA	NA	NA	NA	0.0	0.0	0.1	0.1
South Carolina	0.0	0.0	0.0	0.0	0.0	0.1	0.1	0.1	0.1
South Dakota	0.1	0.0	0.1	0.0	0.0	0.0	0.1	0.1	0.0
West Virginia	0.0	0.0	0.0	0.0	0.0	0.0	0.1	0.0	0.0
Oklahoma	0.1	0.0	0.1	0.1	0.0	0.1	0.1	0.1	0.0
Alabama	0.0	0.0	0.0	0.0	0.0	0.1	0.0	0.0	0.0
Hawaii	NA	NA	NA	NA	NA	0.0	0.0	0.0	0.0
Mississippi	NA	NA	NA	NA	NA	0.0	0.0	0.0	0.0
Utah	NA	NA	NA	NA	NA	0.0	0.0	0.0	0.0
Delaware	NA	NA	NA	NA	NA	0.0	0.0	0.0	0.0
Wyoming	NA	NA	NA	NA	NA	0.0	0.0	0.0	0.0
North Dakota	NA	NA	NA	NA	NA	0.0	0.0	0.0	0.0
Nevada	NA	NA	NA	NA	NA	0.0	0.1	0.0	0.0
Others	0.2	0.1	0.1	0.1	0.1	0.1	0.0	NA	NA
Total	620.7	652.2	686.9	698.7	698.8	711.1	661.2	738.8	722.5

Wine Grape Varietals: TTB Approved

Jan Dutton — Mon, 06 Dec 2021 22:50:49 +0000

The US Alcohol and Tobacco Trade Tax Bureau maintains a list of approved wine grape names for use on labels by US vintners.

Based on current regulations, a wine producer must follow these rules regarding the use of grape names on a bottle of wine:

They may only use grape variety names approved by TTB.
If they use a grape varietal name, an appellation of origin must also appear on the label. The name of a single grape can appear on the label if the wine is made of at least 75% of that grape, although there are exceptions.
The wine must be made from a minimum percentage of the grape varietal.
They may use two or more grape varietal names on the label as long as those two grapes are the only grapes used to make the wine.

TTB Approved Wine Grape Varietals

The TTB approved grape varietal names are:

Number	Grape Varietal
1	Albillo Mayor
2	Alexander
3	Ambulo Blanc
4	Amigne
5	Arandell
6	Aromella
7	Arvine
8	Assyrtiko
9	Bianchetta trevigiana
10	Black Spanish
11	Bluebell
12	Bourboulenc
13	Brachetto
14	By George
15	Cabernet Dorsa
16	Cabernet Volos
17	Caladoc
18	Caminante Blanc
19	Camminare Noir
20	Caprettone
21	Carignano
22	Carricante
23	Chisago
24	Ciliegiolo
25	Coda di Volpe
26	Crimson Pearl
27	Diana
28	Enchantment
29	Errante Noir
30	Esprit
31	Falanghina
32	Fleurtai
33	Frontenac Blanc
34	Geneva Red
35	Godello
36	Golubok
37	Gros Manseng
38	Humagne Rouge
39	Itasca
40	Jacquez
41	Jupiter
42	King of the North
43	L’Acadie blanc
44	Lambrusca di Alessandria
45	Lomanto
46	Loureiro
47	Madeleine Angevine
48	Madeleine Sylvaner
49	Marquis
50	Marselan
51	Mavron
52	Mencia
53	Merlot Kanthus
54	Moschofilero
55	Mourtaou
56	Mustang
57	Nerello Mascalese
58	Opportunity
59	Paseante Noir
60	Pecorino
61	Petite Pearl
62	Picardan
63	Pinot Bianco
64	Plymouth
65	Poulsard
66	Prieto Picudo
67	Regent
68	Ribolla Gialla
69	Rieslaner
70	Riverbank
71	Roditis
72	Rose of Peru
73	Rossese
74	Ruche
75	Saperavi
76	Sauvignon Kretos
77	Sauvignon Rytos
78	Savagnin
79	Savagnin blanc
80	Schiava Grossa
81	Schönburger
82	Sheridan
83	Somerset Seedless
84	Soreli
85	Southern Cross
86	Terret Noir
87	Thiakon
88	Tibouren
89	Tinta Amarela
90	Tinta Cao
91	Tinta Roriz
92	Torrontés Riojano
93	Touriga Nacional
94	Treixadura
95	Vaccarèse
96	Valjohn
97	Verdejo
98	Verdicchio
99	Xarel·lo
100	Xynisteri

World Wine Weather

Judgement of Paris: Napa Wine Climate

What was the judgement of Paris?

Weather and Wine Quality

The First Quantitative Weather vs. Wine Quality Study

The Most Recent Weather vs. Wine Quality Study

A Napa Valley Cabernet Sauvignon Quality Index

Wines of the Judgement of Paris

Napa Wine Climate During the Judgement Years

The Napa Valley Wine Quality Index

Climate of the Judgement of Paris Napa Valley Wines

Wine & Climate: 9 Important Regions

Marlborough Wine Region Climate

Marlborough Wine Region Climate Data

Marlborough Wine Region Climate: Precipitation

Marlborough Wine Region Climate: Temperatures

Marlborough Wine Region Climate Change

Conclusion

2021 California Red Wine Acres by County

2021 California Red Wine Acres by County

Table of Contents

2021 San Joaquin County Red Wine Acres

What red wine grapes were grown in San Joaquin County in 2021?

2021 Sonoma County Red Wine Acres

What red wine grapes were grown in Sonoma County in 2021?

2021 Napa County Red Wine Acres

What red wine grapes were grown in Napa County in 2021?

2021 San Luis Obispo County Red Wine Acres

What red wine grapes were grown in San Luis Obispo County in 2021?

2021 Monterey County Red Wine Acres

What red wine grapes were grown in Monterey County in 2021?

2021 Madera County Red Wine Acres

What red wine grapes were grown in Madera County in 2021?

2021 Fresno County Red Wine Acres

What red wine grapes were grown in Fresno County in 2021?

2021 Sacramento County Red Wine Acres

What red wine grapes were grown in Sacramento County in 2021?

2021 Mendocino County Red Wine Acres

What red wine grapes were grown in Mendocino County in 2021?

2021 Santa Barbara County Red Wine Acres

What red wine grapes were grown in Santa Barbara County in 2021?

2021 Lake County Red Wine Acres

What red wine grapes were grown in Lake County in 2021?

2021 Merced County Red Wine Acres

What red wine grapes were grown in Merced County in 2021?

2021 Kern County Red Wine Acres

What red wine grapes were grown in Kern County in 2021?

2021 Yolo County Red Wine Acres

What red wine grapes were grown in Yolo County in 2021?

2021 Amador County Red Wine Acres

What red wine grapes were grown in Amador County in 2021?

2021 Stanislaus County Red Wine Acres

What red wine grapes were grown in Stanislaus County in 2021?

2021 Tulare County Red Wine Acres

What red wine grapes were grown in Tulare County in 2021?

2021 Solano County Red Wine Acres

What red wine grapes were grown in Solano County in 2021?

2021 Alameda County Red Wine Acres

What red wine grapes were grown in Alameda County in 2021?

2021 El Dorado County Red Wine Acres

What red wine grapes were grown in El Dorado County in 2021?

2021 San Benito County Red Wine Acres

What red wine grapes were grown in San Benito County in 2021?

2021 Santa Clara County Red Wine Acres

What red wine grapes were grown in Santa Clara County in 2021?

2021 Colusa County Red Wine Acres

What red wine grapes were grown in Colusa County in 2021?

2021 Contra Costa County Red Wine Acres

What red wine grapes were grown in Contra Costa County in 2021?

2021 Kings County Red Wine Acres

What red wine grapes were grown in Kings County in 2021?

2021 Riverside County Red Wine Acres

What red wine grapes were grown in Riverside County in 2021?

2021 San Diego County Red Wine Acres

What red wine grapes were grown in San Diego County in 2021?

2021 Calaveras County Red Wine Acres

What red wine grapes were grown in Calaveras County in 2021?

2021 Nevada County Red Wine Acres

What red wine grapes were grown in Nevada County in 2021?

2021 Santa Cruz County Red Wine Acres