Watering: The main cause of seed failure is a lack of WATER. For root growth and development, the upper 2 inches of soil must be kept moist during establishment. This means daily watering, and even multiple times each day may be needed to keep the upper soil profile moist. Once the new seed is mowed, revert back to the standard deep and infrequent watering schedule.
Mowing: Mow after the new seed has reached around 4 inches tall. Use a sharp mower blade and avoid sharp turns, which could tear and uproot the tender young plants. Also, avoid any unnecessary traffic on the seeded areas (kids, pets, etc.).