Smilax walteri aka Coral Greenbrier

Smilax walteri, or coral greenbrier, belongs to the Smilacaceae family. This woody vine grows in the eastern United States. Its range runs from eastern Texas to Florida, then north to New Jersey. It lives beside streams and ponds, in bogs, and in swamp woods. These sites may flood for part of the year.

The vine grows fast and climbs with tendrils. It reaches 5–20 feet [1.5–6.1 metres] tall. Its spread ranges from 6–12 feet [1.8–3.7 metres]. Long rhizomes help it spread below ground. The plant forms several slender, branching stems with angled sides. Their smooth green surfaces bear scattered prickles, mostly near the base. It has fewer prickles than some other greenbriers. The leaves usually fall, though some may stay on the plant. Each simple leaf grows in an alternate pattern along the stem. Leaf shapes range from broad and egg-shaped to narrow and pointed. Three strong veins run through the thin blades. The upper surface is dark green; the underside is paler. Leaf stalks and veins may show red tones. Fall leaves can turn brown or copper.

Small yellow-brown flowers open from April through June. They grow in umbels and measure less than an inch across. Each plant bears either male or female flowers. Grow both sexes if you want fruit. The flowers offer nectar to visiting pollinators. Round, glossy red berries start their display in September. They remain into winter, adding color after the leaves fall. Birds and small mammals eat the fruit. This is North Carolina's only native red-fruited Smilax.

Grow coral greenbrier in sun, partial shade, or dappled light. It suits sandy or loamy soil with acid to neutral pH. Moist ground suits it, and it tolerates wet spells and flooding. The source also lists well-drained soil among its growing conditions. It tolerates heat and grows in USDA zones 7–9. Root cuttings offer a way to raise more plants.

This native vine can serve as a barrier in gardens. Its fruit supports wildlife and adds fall and winter interest. NC State reports no major pest or disease problems. Its care needs fall in the medium range. Prickles can hinder handling, and the plant has high flammability. NC State lists it as non-toxic to dogs, cats, and horses. The supplied evidence does not establish human edibility.