Vitaceae

Caloosa grape

Vitis shuttleworthii

Caloosa grape

Photo: Samuend — CC BY-SA 4.0 · source

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Survives zone 8 through 9

Harvest calendar

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Best planted in early spring after your last frost, or in fall before the ground freezes, depending on your climate.

Fruit is sweet and good fresh once fully ripe, among the best-flavored of Florida's native wild grapes, and used locally for jelly and wine. Distinctively felted, silvery-white new growth and leaf undersides make it easy to identify even before fruiting.

Hardiness
Zone 8–9
Habit
Vine
Edible part
Fruit
Ripens
July–Aug
Mature size
Climbing vine to 6–9 m with support
Light
Full sun
Soil pH
5.5–7.5 (acidic to neutral)
Environment
Subtropical
Native range
Florida and coastal Georgia — pinelands, hammocks and disturbed sandy ground.
Status
Wild
Years to fruit
3–4 yrs
Growth speed
Very fast — 2–5 m of cane in a season once established
Spacing
200 cm (79 in) apart — about 4 m² (43 sq ft) per plant
Leaf shape
Ovate to cordate, 5–10 cm, undersides densely felted white to rust-colored
Root system
Well adapted to deep sandy Florida soils, with good tolerance of both drought and nematodes — traits that make southeastern Vitis useful as rootstock parents in that region.
Fruit description
Purple-black grapes, 10–15 mm, sweet, good fresh flavor
Propagation
Hardwood cuttings in winter, or seed (needs cold stratification).
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

Growing tips. One of the more heat-tolerant wild grapes, thriving in Florida's sandy, well-drained soils. New shoots and leaf undersides are conspicuously white-woolly, fading to rust as they age.

Grow journal

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About the data

Zone figures are typical published ranges — microclimate, drainage and siting shift them by a zone in either direction. Store links are found by an automated search, refreshed every six weeks. Availability is seasonal; stock and prices are not tracked.

Venlo — a reference for cold-hardy edible plants