Pigweeds Pigweed Identification Guide (OSU fact sheet) Managing seed of waterhemp and Palmer amaranth (OSU fact sheet) Palmer amaranth – what it is and what to do now (OSU fact sheet) Herbicide resistance in waterhemp (OSU fact sheet) Pigweed Identification (3-min video) Palmer Amaranth in Ohio and Indiana – what you need to know (11 -min video) Status of Palmer amaranth in Ohio – March 2017 (10-min video) Waterhemp Management in Soybeans (USB/Take Action fact sheet) Palmer amaranth ID (USB/Take Action poster) Palmer Amaranth Management in Soybeans (USB/Take Action fact sheet) Palmer Amaranth Biology, Identification, and Management (Purdue Weed Science bulletin) Pigweed Identification (Kansas State fact sheet) Identification of the Weedy Pigweeds and Waterhemps of Iowa (Iowa State fact sheet)