Most lawns require 1″ to 2″ of water per week, to keep the root system moist. However, it will depend on the type of grass you have and your current soil condition and the amount of shade or sun that the area receives.

The root systems of established lawns generally penetrate about 6 to 8 inches into the soil. Deep and infrequent watering will help promote a vigorous root system.

If under irrigated, cool-season grasses may become semi-dormant in the hottest part of the summer, returning to full vigor in cooler fall weather. Regular deep watering is necessary to keep the lawn green through the summer.