Data provided by the participants of the Consortium of California Herbaria

View additional distribution information on the Jepson eflora

Ambrosia confertiflora is a North American species of ragweed known by the common name weakleaf bur ragweed. Ambrosia confertiflora is native to much of northern Mexico (from Sonora to Tamaulipas) and the southwestern United States from California east as far as Kansas, Oklahoma, and central Texas. It is also naturalized in various other regions and has been declared a noxious weed in Australia.

Plant type

Perennial herb

Plant communities

Coastal Sage Scrub, Southern Oak Woodland

Caterpillars
Butterflies

Butterflies and moths supported

1 confirmed and 17 likely

Confirmed Likely

Ambrosia Plume Moth

Adaina ambrosiae

Garden Webworm Moth

Achyra rantalis

Ancylosis morrisonella

Oso Flaco Flightless Moth

Areniscythris brachypteris