How should I water a newly seeded lawn?
After seeding, keep the upper 1 inch of soil moist by watering once or twice a day. With adequate moisture and warm soil temperatures (55 degrees Fahrenheit or above), the seeds of most turfgrasses should germinate in 2 to 3 weeks. Grass seedlings are very susceptible to desiccation injury. Continue to water the seedlings once or twice a day. When the grass seedlings reach a height of 1 to 2 inches, gradually reduce the frequency of watering, but water more deeply. A thorough watering once a week should be adequate for new grass that has been mowed 2 or 3 times.