yellow nutsedge

noun
variants: or less commonly yellow nut grass

Definition of yellow nutsedge 

: a widely distributed weedy sedge (Cyperus esculentus) with small, edible, rapidly produced, nutlike tubers Yellow nutsedge is a perennial grass-like weed with triangular leaves and a yellow-green color.— Richard Burton, Secrets to a Great Lawn, 2001 In one year, a single yellow nutsedge (nutgrass) can produce 1,900 new plants.— Dan Vierria, The Sacramento (California) Bee, 28 Jan. 2006

called also earth almond, ground almond, rush nut, tigernut

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