Once the newly hydroseeded lawn has set for 24 hours, it is time for watering. Depending on temperatures, watering should take place in the morning, late afternoon, or early evening hours. Keep the mulch moist but don’t over water. If you see pooling, stop watering. Once you start watering it is important to remain consistent, especially when temperatures are above 25 degrees. Lack of watering can cause the seed to dry up and expire. In the spring and fall when temperatures are more favorable and we have cooler evenings, one good watering per day is usually all that is needed. Be careful not to over water during these cooler periods.