In general, turf grasses need about ¾” - 1” of water per week to maintain green color and active growth. However, during certain times during the summer when high temperatures are the norm, you should allow lawns to naturally slow down in growth during those extreme conditions. You may let the lawn go almost completely dormant in hot weather. Many factors such as the soil and weather all have a role in the lawns water needs.
Amount and Timing
Be sure to Water for 1 - 1½ hours once a week on each part of your lawn. Watering everyday can cause more harm than good as roots are not encouraged to grow more deeply in the soil.
Watering should ideally be done in the morning before 10 a.m. Evenings are second best before 6 or 7 p.m.
Try the FOOTPRINT test
Limit activity on a dry lawn to minimize further damage. If you step on your lawn and your footprint does not spring back immediately, then your lawn is too dry. During a drought, you need to water consistently or not water at all. Regular watering will prevent the lawn from going into dormancy. However, inconsistent water will further stress your lawn.
Water after Pest Control Applications
For optimum results following a biological weed control application be sure to WATER your lawn following the application and then keep the lawn moist for 3-4 days after unless otherwise instructed by your turf specialist.
After any Nematode applications for white grubs, it is essential to water your lawn deeply within the next few days so that the product is carried down into the root zone where grub activity takes place.