For strong, healthy roots, water deep.
* Frequent, light watering causes shallow roots and weak grass. Less frequent, deep watering helps form strong root systems.
This holds true for all your landscape plants, not just your grass.
* The best time to water is early morning.
Avoid watering mid-day. Any water that doesn’t evaporate quickly can cause some plants to become scorched. Watering in the evening will leave foliage damp at night, when molds and fungi are most active.