Is a light green bunch-type to slightly spreading winter annual weedy grass. Some subspecies exist which are classified as short-lived perennials (Poa annua ssp. reptans). distributed throughout the United States and tolerates all mowing heights. It grows vigorously in cool, moist weather and often forms extensive patches. Hot dry weather causes it to die and leave unsightly bare areas in good turf.
(No selective weed killer works you must use glyphosate)

Creeping bentgrass (Agrostis palustris) is a perennial cool season grass that forms a dense mat. The grass spreads by profuse creeping stolons and possesses rather vigorous, shallow roots. Stems are decumbent (creeping) and slender and produce long narrow leaves. Leaf blades are smooth on the upper surface and ridged on the underside, 1 to 3 mm wide and bluish green in appearance. (No selective weed killer works you must use glyphosate)

Tall Fescue should be a widely grown cool-season species on long island. For a cool-season species, tall fescue is tolerant to heat and drought, disease resistant, and persists with minimum care. It has a tendency to clump due to its bunch-type growth habit .Tall fescue is easily confused with Kentucky bluegrass, annual ryegrass, and perennial ryegrass.