Photo: Unknown — Public domain · source
Survives zone 6 through 9
Harvest calendar
Best planted in early spring after your last frost, or in fall before the ground freezes, depending on your climate.
California wild grape is a genuinely edible streamside native — its small, tart, purple, slip-skin berries are used fresh, dried or cooked into jelly by foragers — but in gardens it is grown at least as much for fall color and habitat value, and its natural hybrid selection 'Roger's Red' (crossed with feral V. vinifera) is a popular ornamental.
Spread warning. Reported as capable of becoming a vigorous, weedy vine outside its native range, though it is easily controlled by pulling.
- Hardiness
- Zone 6–9
- Habit
- Vine
- Edible part
- Fruit
- Ripens
- Sept–Oct
- Mature size
- Vine 10–15 m
- Light
- Full sun
- Soil pH
- 6.0–7.0
- Environment
- Riparian
- Native range
- Endemic to California and southern Oregon, along stream banks, springs and moist canyons below about 1200–1400 m in the Coast Ranges, Klamath, Sierra Nevada foothills and Central Valley margins.
- Status
- Both wild and cultivated
- Years to fruit
- 2–3 yrs
- Growth speed
- Medium to fast — vigorous once established along a water source.
- Spacing
- 400 cm (157 in) apart — about 16 m² (172 sq ft) per plant
- Leaf shape
- Broad, fan-shaped leaves to about 15 cm wide with coarsely cut lobes and margins, emerging silvery-green and maturing apple-green before turning brilliant orange, red and yellow in autumn.
- Root system
- Adapted to riparian soils, tolerant of both seasonal flooding and summer drought once established; historically its long roots were also harvested by Native Californians as basketry material.
- Fruit description
- Small grapes about 8 mm across, green when immature ripening to purple-black with a bluish bloom, thin flesh, slip-skin, and 3–4 seeds; tart and better suited to jelly, drying or juice than fresh eating.
- Propagation
- By seed after about six weeks of cold stratification sown in a cold frame (germination can take up to 12 months), by hardwood cuttings taken in winter, or by layering.
- Pollination
- ⚠ DIOECIOUS — needs male + female (a vigorous fruitless wild vine is usually a lone male)
The edible parts listed above are a starting point, not a field guide. Identify a plant with certainty — ideally against a local authority — before eating any part of it, and read the full disclaimer. Spotted something wrong? Report it.
Growing guide
Fertilizing. Grows best in deep, rich, consistently moist but well-drained loam and tolerates calcareous soils; established plants are drought-tolerant and need little supplemental feeding away from their native riparian habitat.
How it spreads. Climbs by branched tendrils opposite the leaves, reaching up to 20 m into supporting trees and shrubs, or sprawls as ground cover without support; spreads along waterways and by bird-dispersed seed.
Growing tips. Very drought-tolerant once established despite its riparian origin, and a vigorous grower (up to roughly 1–2 m of new growth a year); needs a warm, sunny position to ripen fruit and winter-only pruning to prevent heavy sap bleeding. Feral/wild V. californica populations are known to hybridize naturally with escaped V. vinifera in California.
Grow journal
Sign in to keep a dated log of when you planted, bloomed and harvested this plant.