Roussanne is a French variety from the northern Rhone valley. California's bearing acreage has more than tripled since 2000, from 97 to 304 acres in 2025, spread across 27 counties led by Santa Barbara, San Luis Obispo, and Sonoma. It is a rich, low-acid white grape that oxidizes easily if mishandled. In California it is most often blended with Marsanne and other Rhone whites, though it is also bottled as a varietal wine.
What kind of grape this is
- Species
- VITIS VINIFERA LINNÉ SUBSP. SATIVA (DE CANDOLLE) HEGI
- Berry color
- BLANC
- Country of origin
- FRANCE
- Synonyms
- 27
- Approved on a US label
- Roussanne
- FPS selections
- 5
names this grape is known by elsewhere, per VIVC
the names TTB permits on a bottle
distinct clones and selections held at UC Davis
Registries
What is published
Counts describe what this atlas holds for Roussanne, not what California grows. A zero is a published answer: it means the source names the grape and reports nothing under it, or does not name it at all.
- 522
county-years of acreage
27 counties, 304 bearing acres in 2025
- 309
district-years of crush
15 of 17 crush districts, 26 crop years
- 309
district-years of Brix
tonnage-weighted at the crusher, Crush Report Table 3
- 7
producers in this atlas
producers whose curated wine list names it — a curated roster of 2,772 producers, not a census of California
- —
regions with a maturity date
not one of the eight cultivars with a
Acreage in California
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Counties and concentration
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Where it is planted
Reported by county — never by AVA
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Share of each county's vineyard
Reported by county — never by AVA
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The counties
Reported by county — never by AVA
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Tonnage and price by district
Reported by crush district — never by county or AVA
All 15 districts on one axis →
loading crush report…
Brix at the crusher
Reported by crush district — never by county or AVA
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Growers in this atlas's roster
- Alban Vineyardsbottled
Winery · Roussanne
- Andrew Murray Vineyardsbottled
Winery · Enchante
- Black Stallion Winerybottled
Winery · Limited Release Marsanne Roussanne
- Inglenookbottled
Winery · Blancaneaux
- La Jotabottled
Winery · Restricted Marsanne-Roussanne
- Ridge Vineyardsbottled
Winery · Ridge Grenache Blanc 2024, Ridge Grenache Blanc 2025
- Tablas Creek Vineyardbottled
Winery · Esprit de Tablas Blanc, Patelin de Tablas Blanc, Roussanne and 1 more
7 of this atlas’s 2772 curated producers, 7 of them with a named wine in the atlas made from it. A roster is not a census — this is who the atlas has entered, not who grows the grape in California.
Measured chemistry, from one producer's own sheets
Ridge Grenache Blanc 2025
8% roussanne13.7 %
alcohol
3.14
pH
5.8 g/L
TA
—
RS
Ridge Grenache Blanc 2024
3% roussanne13.4 %
alcohol
3.24
pH
4.1 g/L
TA
—
RS
2 wines from 1 producer, each read from that producer’s own tech sheet and linked to it. No average is shown, and none should be computed from these. Wineries that publish tech sheets are selected by their own marketing departments, so a mean across them describes publishing habits rather than a grape.