Grass Goes Dormant in Summer Heat
If your lawn is brown and dry, don't stress it with too much watering. During the hottest months of July and August, grasses can become semi-dormant but return to a healthy green in cooler wetter weather of autumn.
With good lawn maintenance throughout the rest of the year, watering during the summer months could be kept down to an acceptable minimum. The best time to do your watering is in the early hours of the day. Doing this will allow the water the chance to evaporate during the day and prevent damage to your lawn.
During the driest period of the summer, our lawns usually will require about one inch of water every week to stay green and growing. Water infrequently (weekly) and deeply (six to eight inches) with one inch of water each time.
Lawns will come back in the cooler, wetter weather, and then you can think about reseeding and refurbishing. Meanwhile, the good news is that dormant lawns won't need frequent mowing.