Lawn Watering Tips

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It can be overwhelming to know how to water your lawn and when the best time to water lawns in Utah is. Turf studies show that most lawns need to be deep-watered once every 3-4 days to stay healthy and green. Watering every day creates shallow roots. Watering less frequently for longer periods of time develops deeper, stronger roots and healthier turf. Water only when needed. If grass does not spring back after being stepped on, it’s time to water. Your lawn will also start to have a blue-gray tint or another color if it is too dry.

Best Time to Water Lawns in Utah

Watering lawns at night will reduce evaporation loss by up to 20 percent. Because our climate is typically dry, if you water at night you shouldn’t have mildew or fungus on your lawn, unless you water too much. Watering in the early morning hours will also prevent mildew and fungus because of the quicker exposure to the sun. In addition, there are several tips for watering lawns with sprinklers to keep in mind. Here are a few pieces of advice to help reduce your water bill:

  • Water less frequently before Memorial Day and after Labor Day.  Change the setting on the sprinkler system or leave the system on manual.
  • Turn the system off or flip the rain switch or rain delay on when it rains.
  • Consider installing a rain sensor or arrange to have a neighbor turn off the sprinklers if it rains when you are away from home.

How Long to Water Lawns

The team at Specialized Pest Control & Lawn Care recommends the following lawn watering tips for determining how much and how often to water: 

  1. Set three or more empty tuna cans at various places on your lawn at least four feet from the sprinkler head.
  2. Turn on your sprinkles for 15 minutes.
  3. Measure the depth of water in each can with a ruler and determine the average depth in the cans.
  4. Match your sprinkler output with the table below.
  5. Water the number of minutes indicated.
  6. Most lawns in Utah need 1 – 1 ½ inches of water in Spring and Fall and 2 – 2 ½ inches of water in Summer per week.
  7. Apply ½ – 1 inch of water each time you irrigate.

1/4 INCH

3/8 INCH

1/2 INCH

5/8 INCH

3/4 INCH


Spring (water every 4 days)

26 min.

17 min.

13 min.

10 min.

9 min.

6 min.

Summer (water every 3 days)

52 min.

35 min.

26 min.

21 min.

17 min.

13 min.

Fall (water every 4 days)

39 min.

26 min.

19 min.

15 min.

13 min.

10 min.

  • 1/4 INCH – 26 min.
  • 3/8 INCH – 17 min.
  • 1/2 INCH – 13 min.
  • 5/8 INCH – 10 min.
  • 3/4 INCH – 9 min.
  • 1 INCH – 6 min.
  • 1/4 INCH – 52 min.
  • 3/8 INCH – 35 min.
  • 1/2 INCH – 26 min.
  • 5/8 INCH – 21 min.
  • 3/4 INCH – 17 min.
  • 1 INCH – 13 min.
  • 1/4 INCH – 39 min.
  • 3/ 8 INCH – 26 min.
  • 1/2 INCH – 19 min.
  • 5/8 INCH – 15 min.
  • 3/4 INCH – 13 min.
  • 1 INCH – 10 min.

*In temperatures above 85 degrees watering more than every 3 days may be required

Need More Lawn Watering Tips?

At Specialized, we know how frustrating it can be to figure out how to water your lawn correctly. Too much or too little and you’re in risk of ruining your beautiful green lawn! If you need expert advice, our team is here for you. We know all about watering lawns in Southern Utah and Northern Utah–contact us today to learn how we can help!

Lawn Watering Tips in Salt Lake County and Northern Utah

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