A weed that closely resembles grass and is often mistaken for a wild grass. It appears in early summer and quickly takes on a pale green appearance. It is easily recognized because it grows faster than the surrounding turf. Closer inspection will show that unlike a grass blade, which is flat, nutsedge has a triangular blade. Nutsedge is most prevalent in lawns or sections of lawns that drain poorly or hold water and generally the wetter the spring the more nutsedge you will see. Nutsedge can only be controlled with a post-emergent herbicide treatment.