Kentucky bluegrass, Poa pratensis L., is a cool season, perennial turfgrass. Kentucky bluegrass spreads by rhizomes and tillers, which allow it to form a dense sod. It will grow in full sun to partial shade and has excellent mowing quality. With a dark green color and a fine leaf texture, Kentucky bluegrass has excellent wear and cold tolerance and moderate resistance to heat and drought. In extreme periods of heat and drought, Kentucky bluegrass will go dormant with growth continuing when moisture becomes available and temperatures subside.