Nimblewill Muhlenbergia schreberi J.F. Gmel.
Life cycle: Perennial, spreads by stolons and seed
Native status: Native to N. America
Habitat: Turf, does well in moist, shaded areas.
General description: Prostrate, mat-forming growth habit. Leaves are less than 3" in length. Fine, slender, inconspicous seedheads
Key ID traits: Short (1 to 3 inches), narrow leaves; short, membranous ligule. Stononiferous growth results in distinct patches within lawns.
Similar species: Wirestem muhly is a larger plant, produces rhizomes rather than stolons, and is not adapted to turf.
Miscellaneous: Nimblewill is a warm-season grass that ‘greens up’ much later in the spring than Kentucky bluegrass, and goes dormant earlier in the fall, resulting in brown patches in lawns.