Invasive Pigweeds: Palmer Amaranth and Waterhemp

Palmer amaranth is a species of pigweed that was recently introduced into Pennsylvania. It has been positively identified on more than 30 sites across Pennsylvania. Palmer poses unique management challenges.

Contact Information

William S. Curran
  • Professor of Weed Science
Phone: 814-863-1014
Dwight Lingenfelter
  • Program Development Specialist
Phone: 814-865-2242