// SPECIES PROFILE · PERENNIAL · NATIVE

Southern jointweed

Polygonella americana

Southern jointweed (Polygonella americana) is a perennial in the — family. Native range includes AR, MO, OK. Hardy in zones 4a–10a. Mature size 6"–3'. Blooms Jun–Oct.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 12 U.S. states, including AL, AR, GA, IN, LA, MO…
USDA hardiness: Zones 4a–10a
Mature size: 6"–3'
Sun: —
Water: —
Bloom: Jun–Oct
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Southern jointweed (Polygonella americana) — *Polygonella americana* — Southern jointweed. Photo by Mason Brock (Masebrock) via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

Southern jointweed (Polygonella americana) is a perennial in the — family. Native range includes AR, MO, OK. Hardy in zones 4a–10a. Mature size 6"–3'. Blooms Jun–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, southern jointweed pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Butterfly Milkweed (Asclepias tuberosa), Cardinal Flower (Lobelia cardinalis), Common Evening Primrose (Oenothera biennis).