The type and slope of the soil, the fertilizer used, the amount of water needed by specific plants and grass, and the efficiency of sprinklers all affect how often one needs to water.
SOIL TYPE Lawns on a sandy soil require more frequent watering than lawns on loam or clay soils.
Water can be applied less often to clay and loam soils, but it should be applied more slowly to prevent runoff. Place sprinklers near the top of the slope. Remember, each 100 lbs. Of P and 10 lbs. Of K. Fertilize lightly in the Spring and again in the early Fall.