catbird / red grape

Photo: Robert H. Mohlenbrock. USDA SCS. 1991. Southern wetland flora: Field office guide to plant species. South National Technical Center, Fort Worth. Courtesy of USDA NRCS Wetland Science Institute. — Public domain · source

Survives zone 5 through 9

Harvest calendar

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

A slender wetland-edge vine best known for its bright red young stems and palmately lobed leaves — the pea-to-marble-sized berries are sweet once fully ripe but sparse and seedy, so it's grown more for its ornamental red bark than for its fruit. ⚠ Know the look-alike: across eastern and central North America, moonseed (Menispermum canadense) twines alongside wild grapes, carries similar dark hanging clusters, and is potentially fatal. Three checks — a grape has 2–4 rounded, pear-shaped seeds while moonseed has ONE flat crescent seed; a grape climbs by forked tendrils and moonseed has none; a grape's leaves are toothed and moonseed's are not. Open a berry and look at the seed before eating any wild grape.

Hardiness

Zone 5–9

Habit

Vine

Edible part

Fruit

Ripens

Sept–Oct

Mature size

Vine 8–15 m

Light

Full sun

Soil pH

6.0–7.0

Environment

Wetland

Native range

South-central and southeastern US — from Texas east to Florida and north along the Mississippi Valley to Illinois

Status

Wild

Years to fruit

2–3 yrs

Growth speed

Medium, reaching around 20 m where supported

Spacing

200 cm (79 in) apart — about 4 m² (43 sq ft) per plant

Leaf shape

Palmately 3–5 lobed, ovate, acuminate leaves 10–15 cm long and wide with rounded sinuses, usually hairless

Root system

Adapted to seasonally flooded bottomland — unusually tolerant of wet feet for a grape, which is the opposite of what most of the genus wants.

Fruit description

Small berries up to about 10 mm across, carried in small bunches, with a sweet flavor once fully mature

Propagation

Seed sown fresh in a cold frame (or 6 weeks cold-stratified if stored), hardwood cuttings taken December/January, or 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.