The Q&A Archives: How much to water lawn?

Question: How much water does a lawn really need, I am caring for my elderly mother's small lawn in Denver. I haven't ever had grass to care for.

Answer: Turfgrass needs to be watered once or twice a week, depending upon weather. Deep soakings are preferable to daily sprinklings. Plan on applying one inch of water per week to your lawn. You can measure how much water your sprinklers put out by setting some empty cat food or tuna cans on the lawn and running the sprinklers. Start with running them for 15 mintues and then checking to see how much water has collected in the can. Your goal is a half inch if you water twice a week or one inch if you water once a week. The time it takes to deliver the proper amount of water is the length of time you should run your sprinklers. If water begins to run off the lawn before you get the required amount of water in the cans, plan on running for a while, turning the water off to allow it to soak in, then turning the water back on until the sprinklers have run for the correct amount of time.

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