// SPECIES PROFILE · GRASS · NATIVE

Knot grass

Setaria reverchonii ssp. firmula

Knot grass (Setaria reverchonii ssp. firmula) is a grass in the — family. Native range includes OK — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 6a–10a. Mature size 6"–3'. Blooms Mar–May.

// QUICK FACTS

Family: —
Group: grass
Native range: Native to FL, NM, OK, TX
USDA hardiness: Zones 6a–10a
Mature size: 6"–3'
Sun: —
Water: —
Bloom: Mar–May
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Knot grass (Setaria reverchonii ssp. firmula) — *Setaria reverchonii ssp. firmula* — Knot grass. Photo via iNaturalist — (c) Eric Knight, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

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, knot grass pairs naturally with: Big Bluestem (Andropogon gerardii), Common Rush (Juncus effusus), Eastern Woodland Sedge (Carex blanda), Fox Sedge (Carex vulpinoidea).