Invasive Spotlight: Palmer Amaranth

Amaranthus palmeri, otherwise known as Palmer Amaranth or Palmer Pigweed is a broadleaf weed. It is an annual plant native to the arid southwestern United States and northwestern Mexico. Once cultivated by Native Americans, it was prized for its ability to produce large amounts of vegetation and vast amounts of seeds. This prolific nature is the reason why today Palmer Amaranth is identified as a noxious weed in Ohio. “Palmer” is an extremely aggressive plant. Growing 2 to 3 inches per day, it can out compete any field crop. Plants can produce as many as 100,000 –500,000 seeds. With no surrounding crop, just one plant can produce 1 to 1.8 million seeds. In addition, it has dioecious reprodu

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