Pigweed Identification Sources<BR> Identification of the Weedy Pigweeds and Waterhemps of Iowa <BR>http://www.weeds.iastate.edu/weed-id/waterhemp/default.htm <BR> <BR> Pigweed Identification: A Pictorial Guide to the Common Pigweeds of the Great Plains <BR>http://www.oznet.ksu.edu/library/crpsl2/s80.pdf<BR>