Some plants have done particularly well this summer. A wet spring and early summer brought the invasion of the yellow nutsedge according to the U of I Home, Yard and Garden Pest Newsletter. Yellow nutsedge, also known as yellow nutgrass, is a warm season perennial in the sedge family. Sedges look like grasses, but if you roll the stem of sedges between your fingers you will notice they are three sided. Grass stems are round or flattened.
Yellow nutsedge is native to Illinois and many parts of North America.
Nutsedge is often considered troublesome when it appears in lawns. They have parallel veins with a prominent midvein. Leaves grow rapidly in summer often appearing well above the lawn grass. Nutsedge has a fibrous root system. Tubers develop rapidly six to eight weeks after the plants emerge usually during late July and August.