Cyperus rotundus

Purple florets. Tubers on thin stringy rhizomes. <12" tall.

While this species can be propagated from seed, this method is not thought to be the primary means of dissemination. For experimental purposes, purple nutsedge is easily propagated from nuts (tubers). Justice found the seed to be dormant when harvested. Dormancy was broken by heating, on a moist substratum, to 100 F (40 C) for 3-6 weeks (Justice 1956, Andersen 1968).

This is the notorious "Coco grass," an abundant, weedy plant in the loamy soils of southeast Texas and all of Louisiana. It is reported to be the most common weed in the world. "Cache-cache" is the Acadian French term for yellow nutgrass. Coco, as in coco grass, is possibly a corruption and Anglicization of cache-cache.

Loamy soils, flood plains, wet meadows.