California Stinkweed
Navarretia squarrosa
Last reviewed: June 2026
Navarretia squarrosa (California Stinkweed) is a native annual forb found across western states including California, Oregon, and Washington. This drought-tolerant wildflower blooms from May through July with small blue flowers.
Light
full sun
Water
low
Size
2"–12" H × 2"–8" W
Bloom
May, Jun, Jul
Native to
CA, MT, OR, PA and 1 more states
Pollinators
bees, beetles
Browse plants for this ecoregion
Navarretia squarrosa is a small annual wildflower native to western North America, forming low mats of spiky foliage. It produces clusters of tiny blue to purple flowers from May through July and thrives in dry, sunny conditions with minimal water.
Growing California Stinkweed
Grow California Stinkweed in full sun and low water. Mature plants reach 2 to 12 inches tall and spread 2 to 8 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
California Stinkweed takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Very small size makes it appear weedy
- Annual nature means gaps in coverage
- Spiky, irregular growth habit looks unmanicured
Wildlife value
This plant provides nectar for native bees and attracts beetles during its spring and early summer blooming period.
Common questions
- Where does Navarretia squarrosa naturally grow?
- California Stinkweed is native to California, Montana, Oregon, Pennsylvania, and Washington, typically found in dry, open areas and grasslands.
- When does California Stinkweed bloom?
- Navarretia squarrosa produces its small clustered flowers from May through July, providing nectar for bees and beetles during the growing season.
- What pollinators visit California Stinkweed?
- The small flowers of Navarretia squarrosa attract bees and beetles, which help pollinate this native annual during its summer blooming period.
- Is California Stinkweed HOA-friendly?
- California Stinkweed takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
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 California Stinkweed? 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