If rainfall occurs, irrigation should be suspended according to the rainfall amount. Water should never be applied at a rate faster than it can be absorbed. This seldom happens with small sprinklers. Avoid extremes in watering frequency and amount. Light, frequent watering is inefficient and encourages shallow root systems.
Excessive irrigation is harmful to the lawn.
Roots need a balance of water and air to function and grow properly. The time for watering the lawn is important. The best time is in the early morning hours. Watering during the day can waste water by excessive evaporation. In addition, watering during hot periods can scald the lawn.