// SPECIES PROFILE · GRASS · NATIVE

Common threesquare

Schoenoplectus pungens

Common threesquare (Schoenoplectus pungens) is a grass in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 1a–11b.

// QUICK FACTS

Family: —
Group: grass
Native range: Native to 50 U.S. states, including AK, AL, AR, AZ, CA, CO…
USDA hardiness: Zones 1a–11b
Mature size: —
Sun: —
Water: —
Bloom: —
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Common threesquare (Schoenoplectus pungens) — *Schoenoplectus pungens* — Common threesquare. Photo by Gordon Leppig & Andrea J. Pickart via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

Common threesquare (Schoenoplectus pungens) is a grass in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 1a–11b.

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, common threesquare pairs naturally with: Broadleaf cattail (Typha latifolia), Needle spikerush (Eleocharis acicularis), Needle spikerush (Eleocharis acicularis var. porcata), Needle spikerush (Eleocharis acicularis var. acicularis).