Knotgrass
Definition: knotgrass
knotgrass: Knotgrass – a common weed (Polygonum aviculare) which affects spring cereals, sugar beet and vegetable crops. Its spreading habit prevents other slower-growing plants from growing. Also called ironweed, irongrass, pigweed, wireweed. Helps farmers identify and control weed infestations.
Originally posted 2004-10-09 13:27:44.
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