Data provided by the participants of the Consortium of California Herbaria

View additional distribution information on the Jepson eflora

Xanthium strumarium (rough cocklebur, clotbur, common cocklebur, large cocklebur, woolgarie bur) is a species of annual plants belonging to the Asteraceae family. It probably originates in North America and has been extensively naturalized elsewhere.

Plant type

Annual herb

Plant communities

Weed (disturbed places), Wetland-Riparian

Butterflies

Pollinators supported

1 confirmed and 9 likely

  • Likely

  • Confirmed

Western Calligrapher

Toxomerus occidentalis

Bordered Patch

Chlosyne lacinia

Ragweed Borer Moth

Epiblema strenuana

Subterranean Cut-worm Moth

Feltia subterranea