Blue Wild Rye
Elymus glaucus
Last reviewed: July 2026
Elymus glaucus (Blue Wild Rye) is a native perennial bunch grass found across western and central North America. It blooms from May through July and provides important habitat for native bees and beetles.
The USDA PLANTS Database (opens in new tab) does not flag Blue Wild Rye as toxic to livestock.
Light
full sun
Water
low
Size
12"–48" H × 12"–24" W
Bloom
May, Jun, Jul
Native to
AR, AZ, CA, CO and 17 more states
Pollinators
bees, beetles
Browse plants for this ecoregion
Blue wild rye is a native bunchgrass that forms attractive clumps of blue-green foliage. It produces delicate seed heads in late spring and summer, then goes dormant in winter.
Growing Blue Wild Rye
Grow Blue Wild Rye in full sun and low water. Mature plants reach 12 to 48 inches tall and spread 12 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Blue Wild Rye is an HOA-friendly choice in the right placement. Maintenance level: low. Tidiness: 3 out of 5.
Works well in: mid zone, foundation.
- Goes completely dormant in winter leaving bare ground
- Seed heads may look untidy to some
- Can appear sparse compared to traditional lawn grasses
Wildlife value
The flowers attract bees and beetles during its May through July bloom period. Seeds provide food for birds and small mammals.
Common questions
- Where does Blue Wild Rye naturally grow?
- Elymus glaucus is native to 22 states across western and central North America, from California and Washington east to Illinois and Arkansas, and from North Dakota south to Texas.
- When does Blue Wild Rye bloom?
- Blue Wild Rye typically blooms from May through July, producing seed heads that are an important food source for wildlife.
- What pollinators visit Blue Wild Rye?
- This native grass attracts various native bees and beetles, which visit the flowers during the spring and summer blooming period.
- What growing conditions does Blue Wild Rye prefer?
- Elymus glaucus thrives in full sun to partial sun conditions with low to moderate water requirements, making it well-suited for xeriscaping and native plant gardens.
- Is Blue Wild Rye toxic to livestock?
- The USDA PLANTS Database does not flag Blue Wild Rye as toxic to livestock.
- Is Blue Wild Rye HOA-friendly?
- Blue Wild Rye 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 Blue Wild Rye? 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