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// SPECIES PROFILE · GRASS · NATIVE

Sleepygrass

Achnatherum robustum

Sleepygrass (Achnatherum robustum) is a grass in the — family. Native range includes KS — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 2a–10b. Blooms Jun–Sep.

// QUICK FACTS
Family
—
Group
grass
Native range
Native to AZ, CO, KS, NE, NM, SD, TX, WY
USDA hardiness
Zones 2a–10b
Mature size
—
Sun
—
Water
—
Bloom
Jun–Sep
Wildlife value
Pollinator and wildlife support
Ecological role
native species profile
Sleepygrass (Achnatherum robustum)
Achnatherum robustum — Sleepygrass. Photo by Albert Spear Hitchcock (1865–1935), Mary Agnes Chase (1869–1963), A. H. Baldwin, (Miss) M. D. Baker, Mary Wright Gill (1866-1929), Frank Lamson-Scribner, W. R. Scholl, Theodore Holm, Leta Hughey, Benjamin Y. Morrison, Mrs. George M. Mullett, Frances Carnes Weintraub, Edna May Whitehorn, or possibly another illustrator. via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

Sleepygrass (Achnatherum robustum) is a grass in the — family. Native range includes KS — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 2a–10b. Blooms Jun–Sep.

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, sleepygrass pairs naturally with: Big Bluestem (Andropogon gerardii), Buffalograss (Bouteloua dactyloides), Canada Wild Rye (Elymus canadensis), Fox Sedge (Carex vulpinoidea).

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