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// SPECIES PROFILE · GRASS · NATIVE

Umbrella flatsedge

Cyperus diandrus

Umbrella flatsedge (Cyperus diandrus) is a grass in the — family. Native range includes MO — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 2b–8a. Mature size 6"–1'.

// QUICK FACTS
Family
—
Group
grass
Native range
Native to 26 U.S. states, including CT, DC, DE, IA, IL, IN…
USDA hardiness
Zones 2b–8a
Mature size
6"–1'
Sun
—
Water
—
Bloom
—
Wildlife value
Pollinator and wildlife support
Ecological role
native species profile
Umbrella flatsedge (Cyperus diandrus)
Cyperus diandrus — Umbrella flatsedge. Photo by Owen Strickland via Wikimedia Commons (CC BY 4.0).

Field Notes

[ growing · ecology · siting · care ]

Umbrella flatsedge (Cyperus diandrus) is a grass in the — family. Native range includes MO — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 2b–8a. Mature size 6"–1'.

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, umbrella flatsedge pairs naturally with: Big Bluestem (Andropogon gerardii), Canada Wild Rye (Elymus canadensis), Fox Sedge (Carex vulpinoidea), Indiangrass (Sorghastrum nutans).

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