Water your lawn twice each week, providing enough irrigation to supplement natural rain so it receives two 1/2-inch doses of water. Use a rain gauge or empty tuna cans set level on the lawn to measure the amount of water. Less frequent watering provides the correct air-to-moisture ratio in the soil that encourages roots to grow deeper for a healthier lawn that withstands drought. The exact schedule depends on the type of grass, soil conditions and weather.Continue Reading
Another way of measuring the proper amount of irrigation is by testing the depth of water penetration. A long screwdriver should penetrate the lawn to a depth of 6 to 8 inches before you feel resistance after irrigation. In order to provide moisture to this depth without runoff, you may need to operate the sprinklers for two or more 10- to 15-minute intervals with a break between.
Determine if the lawn is ready for watering again by looking for footprints after walking across it. If they remain visible, it is time for more water. A second indication is the color of the grass changing from a bright green to a smoky gray-blue color. If you do not see these indicators, wait another day, and check again before watering.Learn more about Gardening & Landscapes