Ambrosia ambrosioides
Giant Bursage
Description
Evergreen perennial to 3' x 4'. Large arrow shaped leaves 4" long. Light green flower clusters Feb thru May. Found in sandy washes & canyons to 4500' in Az & Calif.. Damaged below 30F. Needs well drained soil. Full sun partial shade. This is a ragweed cousin so can be allergenic to many.