Lawn Watering - Knowledgebase Question

Lake Kiowa, TX
Avatar for pjtr55
Question by pjtr55
May 25, 2001
Is there a rule of thumb regarding how often to water the lawn? Some say several times a week and others say once a week, running sprinkler long enough to ensure about one inch of moisture. If the once a week is correct, how long does one run sprinkler system to ensure that one inch of moisture?

Answer from NGA
May 25, 2001

Lawns do best with deep infrequent watering. This encourages a deep root system that is better able to handle stresses of heat and pests. Water every 5-7 days in the heat of summer. This may need to be adjusted a little based on soil type (sand more often than clay) and sun exposure (sun more often than shade).

Each system puts our water at a different rate so we can't say water for "X" minutes. The better approach is to use coffee cans or other straight-sided containers to determine how long to run your system to collect 1/2 inch (sandy soil) to 1 inch (loam or clay soil) of water. Then you will know how long to run your system.

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