Watering do's and don'ts. If you must water, do it right. Do not water on windy days, as breezes only hasten evaporation. Water lawns only when they need it, normally when foliage appears dull, bluish-grey, or when walking on grass leaves footprints. Avoid frequent and shallow waterings which can cause thatch and shallow, drought-sensitive roots.
Lawns require about one inch of water, although no more than once a week.
To measure, place a flat pan under the sprinkler until one inch of water has accumulated, then move to a new location. Ensure that soil is moistened to a depth of four to six inches by pushing a screwdriver into the ground as your indicator. Eliminate the competition. Lawns often run right up to and under trees and shrubs. Expand planting beds.