// SPECIES PROFILE · VINE · NATIVE

Twining screwstem

Bartonia paniculata

Twining screwstem (Bartonia paniculata) is a vine in the — family. Native range includes AR, MO, OK. Hardy in zones 3a–11b. Blooms Aug–Oct.

// QUICK FACTS

Family: —
Group: vine
Native range: Native to 29 U.S. states, including AL, AR, CT, DC, DE, FL…
USDA hardiness: Zones 3a–11b
Mature size: —
Sun: —
Water: —
Bloom: Aug–Oct
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Twining screwstem (Bartonia paniculata) — *Bartonia paniculata* — Twining screwstem. Photo by Bonnie Semmling via Wikimedia Commons (CC BY 4.0).

Field Notes

[ growing · ecology · siting · care ]

Twining screwstem (Bartonia paniculata) is a vine in the — family. Native range includes AR, MO, OK. Hardy in zones 3a–11b. Blooms Aug–Oct.

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, twining screwstem pairs naturally with: Summer Grape (Vitis aestivalis), Virginia Creeper (Parthenocissus quinquefolia), Virgin's Bower (Clematis virginiana), American hogpeanut (Amphicarpaea bracteata var. bracteata).