Where the heat and humidity can be brutal on lawns. Here’s a solid guideline for watering your lawn in that region:
How Long Should You Water?
Aim for about 1 to 1.5 inches of water per week, including rainfall. To hit that, most sprinkler systems need to run about:
15 to 20 minutes per zone, 2–3 times per week
(Assuming standard spray heads. Rotors might need 30–45 minutes.)
Seasonal Adjustments
Spring/Fall: 1–2 times per week
Summer: 2–3 times per week (early morning is best — before 8 a.m.)
Winter: Water very little, if at all, depending on rainfall
Pro Tip:
Use the “tuna can test” — place a few empty tuna cans around your yard, run your sprinklers, and see how long it takes to fill them to 1 inch. That’s your benchmark.