Hairy woollygrass
Erioneuron pilosum
Last reviewed: July 2026
Light
full sun
Water
low
Size
4"–10" H × 6"–12" W
Bloom
May, Jun, Jul, Aug, Sep
Native to
TX, NM, AZ, CO and 4 more states
Browse plants for this ecoregion
A low-growing, tufted perennial bunchgrass with fine, curly, hair-fringed blue-green blades that form small tight mounds. Produces short, inconspicuous seed heads sporadically after rain. Extremely drought tolerant, thriving in rocky, gravelly, well-drained soil in full sun with minimal water.
In an HOA neighborhood
Hairy woollygrass is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
Wildlife value
Compact tufts provide cover for small insects and ground-foraging birds, and the fine seed is eaten by seed-eating birds.
Common questions
- How much sun does Hairy woollygrass need?
- Hairy woollygrass grows best in full sun conditions.
- When does Hairy woollygrass bloom?
- Hairy woollygrass blooms in May, June, July, August, and September.
- Where is Hairy woollygrass native?
- Hairy woollygrass (Erioneuron pilosum) is native to TX, NM, AZ, CO and 4 more states, per the USDA PLANTS Database and regional native plant society lists.
- Is Hairy woollygrass HOA-friendly?
- Hairy woollygrass is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Hairy woollygrass fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.