Also known as nutgrass or swampgrass, yellow nutsedge is not a broadleaf weed or a grassy weed, but a sedge, and a thorough understanding of yellow nutsedge is required before it can be controlled. Life Cycle and Identification Yellow nutsedge is a perennial plant that reproduces primarily by small underground tubers called nutlets. Farmers have difficulty controlling this weed, and as farm land is converted to home sites, the yellow nutsedge plants, as well as nutlets, are often found in the soil of lawns. The leaves are light green to yellowish in color and are very slick or waxy to the touch.
Yellow nutsedge grows most actively during the hot months of summer.
Often the leaves of yellow nutsedge will grow 2 to 4 inches above the turf canopy. During spring and fall, when temperatures are cooler and growth is slower, yellow nutsedge is not as easily noticed. Mature yellow nutsedge plants. A healthy, dense, vigorous stand of turf that can compete with yellow nutsedge and other weeds is the best control method. Encourage a dense stand of turf by following proper turf maintenance practices.