Answer: It really depends upon the type of grass you want to plant. Some grow best in cool weather, others like it hot. For instance, you can get Kentucky Bluegrass seeds to germinate in summer, but creeping fescues might be a little reluctant.
If you decide to use Kentucky Bluegrass, broadcast your seed and cover it with a light layer of peatmoss or compost to help keep the seedbed moist. Water as often as necessary (up to several times a day) to keep the seedbed moist and the seeds should germinate in 7-10 days.
Best wishes with your lawn!
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