// SPECIES PROFILE · GRASS · NATIVE

Schweinitz's flatsedge

Cyperus schweinitzii

Schweinitz's flatsedge (Cyperus schweinitzii) is a grass in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2a–10b. Mature size 6"–3'.

// QUICK FACTS

Family: —
Group: grass
Native range: Native to 29 U.S. states, including AR, AZ, CO, IA, ID, IL…
USDA hardiness: Zones 2a–10b
Mature size: 6"–3'
Sun: Full sun
Water: —
Bloom: —
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Schweinitz's flatsedge (Cyperus schweinitzii) — *Cyperus schweinitzii* — Schweinitz's flatsedge. Photo by infiniteuniverse via Wikimedia Commons (CC0).

Field Notes

[ growing · ecology · siting · care ]

Schweinitz's flatsedge (Cyperus schweinitzii) is a grass in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2a–10b. Mature size 6"–3'.

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, schweinitz's flatsedge pairs naturally with: Canada Wild Rye (Elymus canadensis), Torrey's Rush (Juncus torreyi), Awlfruit sedge (Carex stipata), Broadleaf cattail (Typha latifolia).