Why 1 Inch of Water Weekly? The Science of Lawn Irrigation

One inch weekly balances grass health and water conservation. In 90°F+ weather, evapotranspiration ≈ 0.20 in/day = 1.4 in/week lost. Rain helps. One inch replaces average deficit. Weekly deep watering lets soil dry slightly, giving roots oxygen, and drives roots deeper for drought resistance. Daily light watering keeps soil soggy—roots suffocate.

Scatter cups to measure 1 inch. Check local ET at georgiaweather.net.

Measure one inch of water by scattering a few cups in your lawn