Sauvignac

Hybrid whiteHard to source

Also known as: Cal 6-04

Late-budding (frost-avoiding) PIWI white; Sauvignon-Blanc x Riesling lineage gives passion-fruit/apricot/blackcurrant aromatics. Excellent downy resistance; needs 2 sulfur sprays at flowering. UK consultants flag as a top emerging white. Op

Across the consideration criteria

What it makes

Medium-bodiedDryOak avoidedMedium (3–7 yr)Stands alone

Aromatic family

CitrusGreen

Tasting notes

CitrusGreen Apple

How it grows

Cold hardiness
-10°F
Ripening
Early-season
Vigor
Moderate
Disease tolerance
Very high
Drainage need
Moderately Well
Soil pH
6–7
Graft requirement
Graft Recommended
US availability
Rare

Considerations

Winter hardiness≈ -10°F
TenderVery hardy

Primary buds start to die near -10°F. Handles a normal cold-climate winter, but a hard freeze is a risk.

Season needed2400 GDD
Early / shortLate / long

Needs roughly 2400 growing degree-days to ripen, an early-season variety (Winkler I-II). Finishes early, well before a hard fall frost.

Spray / disease loadregular
HeavyLight

Foliar-disease pressure is moderate for this variety, a regular spray program in a humid climate. Regular cover sprays through the wet months.

Pierce's diseaseSusceptible
SusceptibleResistant

Susceptible to Pierce's disease. Only a threat in the warm, humid South and parts of California; cold-winter regions cure it naturally.

VigorModerate
LowHigh

Moderate vigor. Easier to balance; tolerates more fertile ground.

Heat toleranceModerate
Cool-climateHeat-loving

Moderate heat tolerance. Comfortable across a moderate heat range.

Water demandModerate
Drought-adaptedThirsty

Moderate water demand. Average moisture needs for a wine grape.

Soil pH window6.0–7.0
Acidic 4.5Alkaline 8.5

Prefers soil pH between 6.0 and 7.0. Outside the band, lime or sulfur brings it in range.

RootstockOwn-rooted
Own-rooted OKGraft required

Phylloxera-tolerant: own-rooted vines are fine.

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Grows alike

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