Nut grass or yellow nutsedge enjoys wet soils. In some cases, the presence of the nutsedge indicates soils that are poorly drained. Nut grass gets its name from the nodes on the underground tubers that resemble small nuts, according to the University of Arkansas. Once established, nut grass spreads rapidly through the plant's seed production. While physical removal is possible, any small portion of the remaining underground tuber will give rise to a new plant.
Pull individual nut grass plants from the lawn or garden area. Wear gloves to eliminate the possibility of developing blisters. Pull the errant plant when the soil is wet for best results.
Spray a specific nutsedge herbicide on the plants if the numbers are prohibitive for physical removal. Mix the chemical in the exact proportions as the label directions dictate.
Wait the required number of days as per the manufacturer's label directions. Inspect the nutsedge to follow the progress of the herbicide.
Re-spray the plants as per the herbicide label directions. It may take several applications throughout the growing season to eradicate the nut grass plant, according to Ohio State University.