Most lawns require 1 to 1½ inches of water per week, considering various factors (Location on the property, sun exposure, street, or other objects that can radiate heat)
It's better to provide this amount in one thorough soaking or two equal applications a few days apart.
Ensure the soil is wetted to the depth of the deepest root.
Avoid daily, light irrigations as they promote shallow root growth and encourage crabgrass.
Hose-end sprinklers may need two to three hours in one location to sufficiently water the turfgrass.
Automatic in-ground irrigation systems with spray heads can apply a large volume of water in 10 to 15 minutes.
Systems with rotary sprinkler heads can provide the necessary water in 30 to 40 minutes.
Dormant Grass Watering Practices:
To support survival, dormant grass lawns should be irrigated with 1 to 1-1/2 inches of water in one thorough irrigation, even though it won't turn green. If dry conditions persist, dormant water turf every four to six weeks.
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