14 Ways to Save Water in Your Garden
Gauge your sprinklers
Your sprinklers are on a timer, but have you checked the water output? Place a rain gauge where it can collect water from your sprinkler. Then adjust the timer to give your lawn or plants just what they need. Most cool-season grasses need about 1 to 1.5 inches of water a week to maintain color and growth. One penetrating, weekly soaking (1 to 1.5 hours) encourages plant roots to grow down in search of water, which makes them healthier and more likely to find water without additional watering.
If you don't have a rain gauge, you can also set out cans to collect water; simply mark the inches on them or dip in a ruler to measure the water.