Palmer amaranth – current state-level distribution in the US

Palmer amaranth is native to the southwestern United States, and has been recognized as a problematic weed in the southwest and southeastern US for many years. Each year, this species seems to move further north. I’ve been trying to keep an accurate state-level distribution map for this weed, and thought I’d post it here for anyone else who might be interested.


Data sources:

PLANTS database (

  • California, Nevada, Utah, Arizona , Colorado, New Mexico, Nebraska, Kansas, Oklahoma, Texas, Wisconsin, Illinois, Missouri, Arkansas, Louisiana, Mississippi, Tennessee, Kentucky, Florida, Georgia, South Carolina, North Carolina, Virginia, West Virginia, Ohio, Pennsylvania, New York, Massachusetts, New Jersey, Maryland

Other sources