Palmer amaranth has been confirmed in four additional North Dakota counties, which are Benson, Dickey, Foster and Richland. Plants in two counties were confirmed through laboratory analysis, while NDSU Extension specialists confirmed the weed in the other two counties. NDSU Extension agronomist Tom Peters says “the way Palmer amaranth reached each county was different.” Specializing in weed control, Peters adds likely sources were seeds carried by migratory birds, a used combine, out-of-state feed purchases, custom combining and grain cleaned out of railroad cars. The noxious weed was first found in a soybean field in McIntosh County this summer. To help producers, landowners and others learn more, NDSU Extension has developed a website about Palmer amaranth and how to identify it.