|Your question wasn't very specific, but nut grass is a common weed in your area, so I imagine you'd like to control it. Nut Grass is Cyperus rotundus. To control, hand weed as soon as the weed emerges. When infestation is too large to practically hand weed then chemical control is required. There are chemicals available to control this weed and they should be available at your local plant nursery. The application requirements are varied for each different turf variety. Be sure to read the entire chemical label for directions for safe use, handling, the application rate etc.