Laying sod is one of the quickest and easiest ways to establish a new lawn. Unlike seed, sod suffers fewer pest and weed problems and requires less initial care. However, sod cannot be laid and neglected. During those first few weeks when it is establishing itself, your sod must be watered consistently. This will encourage it to produce deep roots that will help it grow more vigorously in the future and become more disease resistant.
Water the sod immediately after you lay it. Give it enough water so that the native soil underneath the sod is wet, but not soaked with water.
Check the moisture level of the soil underneath the sod squares once daily, early in the morning. Ideally, the soil should be as moist as the soil that accompanied the sod when you purchased it. If the soil is dry, water it. One inch of water, given every two to three days, is normally sufficient to keep the sod's soil moist. In periods of drought or high heat, however, your sod may need to receive 1 inch of water daily (always in the early morning).
Once the sod has begun to put down roots, reduce your watering frequency to 1 inch of water given once every five to seven days.