|what is the best time to re-seed my lawn and how often should it be watered ?|
|Since you're in a hot summer area, wait until October or November to reseed your yard. After broadcasting the seeds water the lawn well. The existing grass should keep the seeds from completely drying out between waterings. I'd water every 3-4 days until the seeds have germinated and the new grass is up and growing.
Best wishes with your lawn!