By: Kristen Obeid, OMAFRA Weed Management Specialist – Horticulture
Dave Bilyea, Weed Management – Horticulture, University of Guelph, Ridgetown Campus

The first line of defense against waterhemp and palmer amaranth is proper identification.  It is EXTREMELY difficult to identify waterhemp and palmer amaranth from other pigweed species especially as seedlings.