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// SPECIES PROFILE · GRASS · NATIVE

Black flat sedge

Cyperus niger

Black flat sedge (Cyperus niger) is a grass in the — family. Native range includes OK — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 4a–11a. Mature size 6"–3'.

// QUICK FACTS
Family
—
Group
grass
Native range
Native to AZ, CA, NM, OK, TX
USDA hardiness
Zones 4a–11a
Mature size
6"–3'
Sun
—
Water
—
Bloom
—
Wildlife value
Pollinator and wildlife support
Ecological role
native species profile
Black flat sedge (Cyperus niger)
Cyperus niger — Black flat sedge. Photo via iNaturalist — (c) Sue Carnahan, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Black flat sedge (Cyperus niger) is a grass in the — family. Native range includes OK — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 4a–11a. 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, black flat sedge pairs naturally with: Canada Wild Rye (Elymus canadensis), Common Rush (Juncus effusus), Fox Sedge (Carex vulpinoidea), Little Bluestem (Schizachyrium scoparium).

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