Take your soil's temperature in the early spring. Stick the soil thermometer into the soil to a depth of 2 to 3 inches and keep it there for 3 to 5 minutes.
Pull the thermometer out and read the results. If the soil is cooler than 60 degrees Fahrenheit, delay planting the Ultradwarf Bermuda grass until it warms up.
Wait 2 to 3 weeks after the last frost date in your area to plant the Ultradwarf Bermuda grass. This time can range from March to May, depending on your location.