// SPECIES PROFILE · GRASS · NATIVE

Hairy woollygrass

Erioneuron pilosum

Hairy woollygrass (Erioneuron pilosum) is a grass in the — family. Native range includes KS, OK. Hardy in zones 2b–11a. Mature size 8"–1'. Blooms Apr–Oct.

// QUICK FACTS

Family: —
Group: grass
Native range: Native to 9 U.S. states, including AZ, CA, CO, KS, NM, NV…
USDA hardiness: Zones 2b–11a
Mature size: 8"–1'
Sun: Full sun
Water: Low · xeric
Bloom: Apr–Oct
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Hairy woollygrass (Erioneuron pilosum) — *Erioneuron pilosum* — Hairy woollygrass. Photo by Gaiacoyote via Wikimedia Commons (CC0).

Field Notes

[ growing · ecology · siting · care ]

Hairy woollygrass (Erioneuron pilosum) is a grass in the — family. Native range includes KS, OK. Hardy in zones 2b–11a. Mature size 8"–1'. Blooms Apr–Oct. Low water use makes it a strong candidate for xeric and drought-conscious plantings.

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, hairy woollygrass pairs naturally with: Canada Wild Rye (Elymus canadensis), Sideoats Grama (Bouteloua curtipendula), Torrey's Rush (Juncus torreyi), Blue grama (Bouteloua gracilis).