// SPECIES PROFILE · PERENNIAL · NATIVE

Crowpoison

Nothoscordum bivalve

Crowpoison (Nothoscordum bivalve) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 4a–11b. Mature size 1"–16". Blooms Mar–Nov.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 19 U.S. states, including AL, AR, FL, GA, IL, IN…
USDA hardiness: Zones 4a–11b
Mature size: 1"–16"
Sun: Full sun
Water: —
Bloom: Mar–Nov
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Crowpoison (Nothoscordum bivalve) — *Nothoscordum bivalve* — Crowpoison. Photo by Eric in SF via Wikimedia Commons (CC BY-SA 3.0).

Field Notes

[ growing · ecology · siting · care ]

Crowpoison (Nothoscordum bivalve) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 4a–11b. Mature size 1"–16". Blooms Mar–Nov.

Why it's on this list: native species profile. Native-range data from the Lady Bird Johnson Wildflower Center (NPIN), cross-checked against iNaturalist observations. Part of Rooted Revival's regional native plant catalog — true natives for Oklahoma, Arkansas, Missouri and Kansas.

Companion Planting

[ guild · polyculture · cross-layer pairings ]

In the same native range, crowpoison pairs naturally with: American Lotus (Nelumbo lutea), Broadleaf Arrowhead (Sagittaria latifolia), Butterfly Milkweed (Asclepias tuberosa), Cardinal Flower (Lobelia cardinalis).