Western Blue-eyed Grass
Sisyrinchium bellum
Last reviewed: July 2026
Sisyrinchium bellum is a native California and Oregon wildflower with blue flowers blooming March through June. This drought-tolerant grass-like perennial attracts bees and butterflies in full sun gardens.
Western Blue-eyed Grass (Sisyrinchium bellum) is not on the ASPCA Animal Poison Control Center toxic plant list for dogs or cats (aspca.org (opens in new tab), last reviewed 2026-05-21). If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
6"–12" H × 6"–12" W
Bloom
Mar, Apr, May, Jun
Native to
CA, OR
Pollinators
bees, butterflies
Browse plants for this ecoregion
Blue-eyed grass is a charming native perennial with grass-like foliage and delicate blue flowers in spring. Despite its name, it's actually a member of the iris family, forming neat clumps that work well in borders or rock gardens.
Growing Western Blue-eyed Grass
Grow Western Blue-eyed Grass in full sun and low water. Mature plants reach 6 to 12 inches tall and spread 6 to 12 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Western Blue-eyed Grass is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
- Can look dormant and less attractive in late summer without supplemental water
Wildlife value
The bright blue flowers attract native bees and butterflies, providing valuable spring nectar when many other plants aren't yet blooming.
Common questions
- When does Western Blue-eyed Grass bloom?
- Sisyrinchium bellum typically blooms from March through June, producing small blue flowers with yellow centers.
- What pollinators visit Western Blue-eyed Grass?
- This native plant attracts various bees and butterflies, making it valuable for pollinator gardens in California and Oregon.
- How much water does Sisyrinchium bellum need?
- Western Blue-eyed Grass is drought-tolerant once established and thrives with low to moderate water, making it suitable for water-wise landscapes.
- Is Western Blue-eyed Grass toxic to dogs?
- Western Blue-eyed Grass is not on the ASPCA Animal Poison Control Center toxic plant list for dogs (aspca.org).
- Is Western Blue-eyed Grass toxic to cats?
- Western Blue-eyed Grass is not on the ASPCA Animal Poison Control Center toxic plant list for cats (aspca.org).
- Is Western Blue-eyed Grass HOA-friendly?
- Western Blue-eyed Grass 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 Western Blue-eyed Grass? 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