Cool fall temperatures at night combined with moisture can promote lawn diseases. The Utah Division of Water Resources posted the information on its Facebook page. Plan to water your tree up until temperatures dip into the 30s for a few days straight. Deep soak your lawn's root zone where the water won't evaporate as quickly and will do the most good for the plant. Lawn Watering Guide LAWN WATERING GUIDE BROUGHT TO YOU BY Utah Division of Water Resources . Water deeply. Water only when air temperatures are above 40 degrees F. Apply water at mid-day so it will have time to soak in before possible freezing at night. Congress closes in on $900 billion COVID-19 … Pay special attention to watering the seed if you live in southern Utah because of the hot temperatures. How to Tell if the Grass is Watered Enough. Don't over water. Water your new lawn according to a water demand curve. Check to See if Your Lawn Needs Water Only water your lawn when it needs water. Watering Guidelines. The end of July is when you may decide to stop watering the lawn and allow it to “go golden” or dormant for the summer. If you choose to allow the lawn to go dormant, you can expect warm-season grasses — such as centipedegrass, bermudagrass, St. Augustinegrass or zoysiagrass — to remain alive and grow when more favorable conditions prevail. Most Viewed. Susceptibility increases for lawns with south or west exposures. Watering grass seed is similar to regular lawns, but these tips should help your grass seed flourish into a healthy yard. Whether your yard sports grass that's green in the summer, winter or all year, grass water needs are a year-round issue. Test your soil moisture with a soil probe or use a long (6 inches) screwdriver to see how moist the soil is. SALT LAKE CITY — It’s time to turn off your sprinklers and stop watering your lawn unless you live in one of three counties in Utah. Lawn watering is often stopped in early fall. Newly established lawns, whether seeded or sodded, are especially susceptible. Q & A - Fall Watering Answers from Weed Man Lawn Care. Lawns also are prone to winter damage. When you do water your lawn, water in the early morning so that the grass surface can dry off. If it's moist, don't water! Q: Now that the temperatures are getting cooler, when should I stop watering my lawn this fall? By using a soil probe (or even a screwdriver), you can determine if your soil is moist in the root zone, and if you need to water. If you leave footprints in the grass when you walk on it, then it is time to water! If you live in Denver, a warmer region, or an area with a mild winter, you can hydrate your tree in winter if it looks thirsty. Besides increasing mowing time, watering may encourage weed growth, stimulate disease outbreaks and raise your water bill. Just make sure the thermometer reads over 40 degrees. 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