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

Caterpillars
Butterflies

Butterflies and moths supported

2 confirmed and 6 likely

Confirmed Likely

Ambrosia Plume Moth

Adaina ambrosiae

Bordered Patch

Chlosyne lacinia

Adaina montanus

Ragweed Borer

Epiblema strenuana