Caring for Your Existing Lawn
Lawns need at least 1 inch of water (from rain or applied water) per week to grow well. Sandy soils generally require more water. Clay or heavy soils hold moisture better, so they require less water. A deep, slow soaking is much better than frequent, light watering because it causes the roots to reach deeper into the soil.
The best time to water is early in the morning, while the dew is still on the grass. Mow no shorter than 3 inches.
September fertilizing is recommended for new sod, however, do not fertilize for the first 60 days after installation. For sod installed in the fall, fertilize in May.