how warm does it need to be to plant grass seed
Usually planted in the early fall, cool-season grass seeds prefer daytime temperatures ranging from 60 to 75 F. With this temperature range, the soil itself is usually between 50 and 65 F -- the right environment for germination.arm-season grasses, like St. Augustine (Stenotaphrum secundatum), which grows in U.S. Department of Agriculture plant hardiness zones 8 through 10, rely on daytime temperatures hovering around 80 degrees Fahrenheit for successful germination. But air temperature may not be the best indicator of soil temperature.