Crested Hairgrass
Koeleria pyramidata
Last reviewed: June 2026
Light
full sun
Water
low
Size
12"–24" H × 6"–12" W
Bloom
May, Jun, Jul
Native to
WY
Browse plants for this ecoregion
Crested hairgrass is a bunch grass that forms compact, neat clumps with fine-textured foliage. It produces delicate, pyramidal seed heads from May through July that add graceful movement to the landscape. This drought-tolerant perennial maintains a tidy appearance throughout the growing season.
In an HOA neighborhood
Crested Hairgrass 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
The seed heads provide food for small birds and the grass offers nesting material. As a native grass, it supports local ecosystems and provides habitat for beneficial insects.
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 Crested Hairgrass fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.