Whether you begin with seed, sod, or plugs, tend to your lawn diligently over the coming 4-6 weeks. Start by watering lightly every day. The goal is to keep the soil surface moist without water running off the surface. After about 2 weeks, decrease the frequency of irrigation but increase the amount of water you apply. By week 6 you should be applying an inch of water per week in one application, if there has been no significant rainfall.