When watering a lawn, water infrequently, but deeply. This means water less than once per week, but when you do water, water to a depth of 1 inch. An empty tuna can is approximately one inch deep. Place the can beside your sprinkler and stop watering once it is full. Infrequent, deep watering results in deep root growth.
Some new models of sprinklers have built in timers which automatically shut off to avoid over-watering. To determine the timer setting, just use the tuna can method described above. Time how long it takes the can to fill up and then you will know the correct setting for future watering.
During extended dry periods in the summer, allow your grass to go dormant (brown). Watering only once per month (about ¼ to ½ inch is sufficient) will keep your grass alive and allow it to green up once fall rains return.
The best time to water is in the morning. Remember to follow any water restrictions that may be in place.
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