To efficiently water the lawn, measure the amount of water applied and provide enough water to reach the roots of grass and other plants. Avoid watering during the warmest part of the day and at night to ensure that the lawn is resistant to disease.
Watering in the morning is typically recommended, but in regions with very hot, dry weather, homeowners should water lawns in the early evening to promote proper water absorption. Typically, grass and plants require about 1/2 to 1 inch of water each week to thrive. Water the lawn several times weekly to reach the recommend amount of moisture, rather than once a week. To determine whether the lawn is adequately watered, use a soil probe. The probe should easily penetrate the soil to a depth of at least 6 inches.
Water plants with shallow roots more frequently than those with deep or well-established root systems. Placing mulch around plants with shallow root systems conserves water and allows homeowners to water those plants less often. Mulch can also be used around trees and in container gardens to conserve water.
Place sprinklers in specific areas to provide adequate water to plants with deeper root systems. To determine whether the sprinklers are working properly, place empty containers on the lawn, and measure the amount of water in each container after 15 minutes. Arrange the sprinklers so that each area of the lawn receives the same amount of water, and check the sprinklers regularly for signs of damage to prevent uneven watering.