NIMBLEWILL - Knowledgebase Question

Rockville, Ma
Avatar for jamesshead
Question by jamesshead
February 8, 2011

Answer from NGA
February 8, 2011
Nimblewill, Muhlenbergia schreberi, is a native, warm season, weedy grass that often invades home lawns. It grows best during the warmest summer months and can often be found in damp, shady areas or in areas that receive only a partial day of full sun.

There is no easy method for controlling nimblewill, because there is no herbicide that will kill this weed and not kill the existing turfgrass, too. The easiest means of control is to spray patches of nimbleweed with a total-kill herbicide like RoundUp. Spray a circle 10-12 inches larger on each side than the existing patch, to ensure that all stolons are killed. Allow the grass 2-3 weeks to die back, then reseed or re-sod the area with a shade tolerant turfgrass cultivar.

A common mistake made by homeowners is not killing a large enough area of grass initially, and inadvertently leaving some nimblewill alive. When this happens the patches will re-grow, and the control process must to be repeated.

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