Weed encroachment is possible on every golf course regardless of grass type, weather or budget. Even with a sound weed management program, breakthrough is inevitable. Some weeds, such as dandelion and clover, are easily controlled with herbicides. Unfortunately, not all weeds are as easily eradicated. Kyllinga and nutsedge require the implementation of more aggressive control strategies, usually involving a combination of preemergence and postemergence herbicides, to gain acceptable control.