Mowing
A common mistake is to wait too long before mowing new grass. As soon as cool-season grasses reach a height of 3 inches, mow with a sharp mower blade set at the height of 2 inches. New grass is succulent, so it is best to mow on a warm afternoon when the grass and soil are drier. Continue mowing at the height of 2 inches through the last mowing of the season. Warm-season grasses should be mowed one to 2 inches tall during establishment. Regular mowing stimulates the grass to spread rather than grow upright. Cool-season grasses are winter hardy and do not need to be left long for winter protection. Warm-season grasses should be mowed 1⁄2 to 1 inch taller at the end of the season. Taller mowing will help protect sensitive growing points during the winter months.