// SPECIES PROFILE · SHRUB · NATIVE

Eastern poison ivy

Toxicodendron radicans ssp. negundo

Eastern poison ivy (Toxicodendron radicans ssp. negundo) is a shrub in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–10a. Mature size 2'–5'. Blooms Apr–Jun.

// QUICK FACTS

Family: —
Group: shrub
Native range: Native to 38 U.S. states, including AL, AR, AZ, CT, DC, DE…
USDA hardiness: Zones 2b–10a
Mature size: 2'–5'
Sun: Part shade
Water: —
Bloom: Apr–Jun
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Eastern poison ivy (Toxicodendron radicans ssp. negundo) — *Toxicodendron radicans ssp. negundo* — Eastern poison ivy. Photo via iNaturalist — (c) Sam Fraser-Smith, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Eastern poison ivy (Toxicodendron radicans ssp. negundo) is a shrub in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–10a. Mature size 2'–5'. Blooms Apr–Jun.

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, eastern poison ivy pairs naturally with: False Indigo Bush (Amorpha fruticosa), Smooth Sumac (Rhus glabra), Great ragweed (Ambrosia trifida), Texan great ragweed (Ambrosia trifida var. texana).