Californian Burr, Burweed, Cocklebur
Xanthium orientale
Last reviewed: June 2026
Light
full sun
Water
low
Size
12"–36" H × 12"–24" W
Bloom
Jul, Aug, Sep
Native to
AL, AR, AZ, CA and 44 more states
Pollinators
beetles, flies
Browse plants for this ecoregion
Cocklebur is a coarse annual weed with large, rough leaves and insignificant flowers that develop into spiny, burr-like seed pods. The plant has a weedy appearance and spreads readily through its hitchhiking burrs that stick to clothing and animal fur. It typically grows in disturbed soils and waste areas.
In an HOA neighborhood
Californian Burr, Burweed, Cocklebur 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.
- Considered a noxious weed in many areas
- Spiny burrs create maintenance problems
- Very weedy, unkempt appearance
Wildlife value
Provides nectar for beetles and flies during summer blooming period. Seeds may be eaten by some birds, though the spiny burrs can be problematic for pets 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 Californian Burr, Burweed, Cocklebur fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.