Skip to main content

Identification and Management of Palmer Amaranth in South Dakota

Palmer amaranth (Amaranthus palmeri) is an aggressive weed that can be resistant to multiple herbicide sites of action. This weed is native to the southwest U.S. and Mexico but is slowly making its way north.

Proper identification is an important component of managing this weed. Palmer amaranth is from the pigweed family and therefore can be mistaken for waterhemp, redroot pigweed, prostrate pigweed, and other common pigweeds that grow in South Dakota.