Mowing height adjustment is probably the most important practice to prepare lawns for hot weather. Mow at heights around three inches or slightly higher. If in doubt, set the mower as high as it will go. Lawns maintained at higher heights usually develop deeper roots and dry out slower than closely mowed turf. Lawn growth will slow as the weather gets drier and hotter.
Questions also arise concerning lawn watering practices for the summer.
Most lawns in our area consist of cool-season lawn grasses such as Kentucky bluegrass, perennial ryegrass, and fine fescue. These grasses naturally slow down and may go dormant in the heat of summer. Decide to water lawns all summer as needed to keep them green or let lawns go dormant. Do allow lawns to turn brown and then water them back to a green condition, as this depletes energy reserves and stresses the plant. Water early in the day if at all possible.