To figure out when it is time to water your lawn, keep an eye out for early indications of dehydration and wilt. Common signs include grass that is bluish-green, grass blades that curl and footprints that stay noticeable on the grass.
The majority of lawns need around one inch of water each week. While you can water at any time, the most effective time to water is generally morning, when you will lose the smallest amount of water to wind drift and evaporation.
On days when temperatures are above 90°F, run your sprinklers 5 to 10 minutes per zone in the afternoon to cool the turf and reduce stress. This is called "spritzing," and it reduces the symptoms of summer patch disease.
*Be sure to follow any restrictions in the summer during a drought – remember this effects everyone, not just you.