Unlike crabgrass, nutsedge (Cyperus spp.) is a perennial weed. However, it can look like an annual because the above-ground parts of the plant die back over winter. What gardeners can't see ...

These spring rains also bring summer weeds. One of the most difficult lawn weeds to control goes by several names including nutsedge, nutgrass and water grass. The technical name is yellow nutsedge.