// SPECIES PROFILE · SHRUB · NATIVE

Roundleaf greenbriar

Smilax rotundifolia

Roundleaf greenbriar (Smilax rotundifolia) is a shrub in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–11b. Mature size 8'–20'. Blooms Apr–Jun.

// QUICK FACTS

Family: —
Group: shrub
Native range: Native to 34 U.S. states, including AL, AR, CT, DC, DE, FL…
USDA hardiness: Zones 2b–11b
Mature size: 8'–20'
Sun: Part shade
Water: Medium
Bloom: Apr–Jun
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Roundleaf greenbriar (Smilax rotundifolia) — *Smilax rotundifolia* — Roundleaf greenbriar. Photo by Fepup via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

Roundleaf greenbriar (Smilax rotundifolia) is a shrub in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–11b. Mature size 8'–20'. 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, roundleaf greenbriar pairs naturally with: False Indigo Bush (Amorpha fruticosa), Smooth Sumac (Rhus glabra), Eastern Wahoo (Euonymus atropurpureus), Great ragweed (Ambrosia trifida).