Grass - Cool Season
Cool-season grasses include bentgrass, bluegrass, ryegrass, fescue, and other more northern-adapted grasses. These grasses are used as permanent grasses in cool or cold climates. Some are used for overseeding the warm-season grasses in the south, and they are also sometimes used in shady areas in warm climates.
Cool-season grasses are of the bunch type rather than spreading like bermuda and buffalo. All grasses are maintained in basically the same way except that bunch grasses should be mowed higher than spreading grasses.
Cool season grasses such as fescue, ryegrass, bentgrass, and bluegrass (Poa trivialis) should be planted in October, or anytime during the winter when the temperature is above 40°. Seeding rates are shown below. In all cases, the newly applied seed should be watered at least twice daily until the grass has grown to the point of covering the ground.