Spiny Sheepbur
Lappula occidentalis
Last reviewed: June 2026
Light
full sun
Water
low
Size
6"–24" H × 4"–12" W
Bloom
Jun, Jul, Aug
Native to
AR, AZ, CA, CO and 19 more states
Pollinators
bees, beetles
Browse plants for this ecoregion
Spiny sheepbur is a small annual wildflower that produces clusters of tiny blue or white flowers from June through August. The plant develops spiny, bur-like seeds that easily attach to clothing and fur, making it somewhat problematic in maintained landscapes.
In an HOA neighborhood
Spiny Sheepbur 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.
- Produces spiny burs that stick to clothing and pets
- Can appear weedy and unkempt
- Self-seeds aggressively and may spread to unwanted areas
Wildlife value
This native annual provides nectar for bees and beetles during its summer blooming period. The seeds also provide food for small birds and wildlife.
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 Spiny Sheepbur fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.