Wavy Hairgrass
Avenella flexuosa
Last reviewed: June 2026
Light
part shade
Water
medium
Size
12"–24" H × 6"–12" W
Bloom
May, Jun, Jul, Aug
Native to
AL, AR, CA, CO and 35 more states
Wavy hairgrass is a delicate native bunch grass that forms small, tidy clumps with fine-textured foliage. It produces airy, graceful seed heads from late spring through summer that sway gently in the breeze. This compact grass works well as an accent plant or groundcover in partially shaded areas.
In an HOA neighborhood
Wavy 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 seeds provide food for small birds and the grass offers nesting material. As a native grass, it supports various insects that serve as food sources for birds.
Common questions
- How much sun does Wavy Hairgrass need?
- Wavy Hairgrass grows best in part shade conditions.
- When does Wavy Hairgrass bloom?
- Wavy Hairgrass blooms in May, June, July, and August.
- Where is Wavy Hairgrass native?
- Wavy Hairgrass (Avenella flexuosa) is native to AL, AR, CA, CO and 35 more states, per the USDA PLANTS Database and regional native plant society lists.
- Is Wavy Hairgrass HOA-friendly?
- Wavy Hairgrass 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.
Ready to grow Wavy Hairgrass? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Not sure where to start? Take the 2-minute yard quiz