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Nutsedges are perennial weeds that superficially resemble grasses.
Leaves are V-shaped in cross section and arranged in sets of three at the base. Stems are triangular in cross section. Tubers of yellow nutsedge are produced singly while purple nutsedge tubers are produced in chains, several on a single rhizome. See UC IPM's Nutsedge Pest Note for more information. The Regents of the University of California.