// SPECIES PROFILE · GRASS · NATIVE

Illinois flatsedge

Cyperus grayoides

Illinois flatsedge (Cyperus grayoides) is a grass in the — family. Native range includes AR, MO. Hardy in zones 5a–10a.

// QUICK FACTS

Family: —
Group: grass
Native range: Native to AR, IL, LA, MO, TX
USDA hardiness: Zones 5a–10a
Mature size: —
Sun: —
Water: —
Bloom: —
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Illinois flatsedge (Cyperus grayoides) — *Cyperus grayoides* — Illinois flatsedge. Photo by Charles T. Bryson, USDA Agricultural Research Service, Bugwood.org via Wikimedia Commons (CC BY 3.0 us).

Field Notes

[ growing · ecology · siting · care ]

Illinois flatsedge (Cyperus grayoides) is a grass in the — family. Native range includes AR, MO. Hardy in zones 5a–10a.

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, illinois flatsedge pairs naturally with: Big Bluestem (Andropogon gerardii), Buffalograss (Bouteloua dactyloides), Common Rush (Juncus effusus), Eastern Gamagrass (Tripsacum dactyloides).