Deep watering improves drought resistance by promoting deeper, more extensive root systems. Depth of watering should be six to twelve inches for turf and bedding plants, and twelve inches for perennials, shrubs, and trees. One inch of irrigation wets a sandy soil to a depth of about 12 inches. Examine the irrigation system and repair leaks promptly. Don't fertilize or, if you do, do so with a low nitrogen fertilizer.
Fertilization stimulates growth and increases water needs.
Signs of wilting include footprints that remain in the grass long after being made, a bluish gray appearance to the lawn, and a large proportion of leaf blades that are folded in half length-wise. Raise the cutting height of turf. Although taller grass uses slightly more water than shorter grass, a higher cutting height promotes deeper rooting and maintains turf quality longer. Mow less frequently. Mowing stresses the grass plant by increasing respiration and reducing root growth.