Lawns are a common feature of private gardens, public landscapes and parks in many parts of the world. They are created for aesthetic pleasure, as well as for sports or other outdoor recreational use.
Lawns are useful as a playing surface both because they mitigate erosion and dust generated by intensive foot traffic and because they provide a cushion for players in sports.
Early autumn, spring, and early summer are the primary seasons to seed, lay sod (turf), plant 'liners', or 'sprig' new lawns, when the soil is warmer and air cooler. Seeding is the least expensive, but takes longer for the lawn to be established.
However, watering your lawn is among the highest US expenses, this is due to all the water used! Watering lawns makes up between 30-60 % of US urban water consumption. Surely lawns know how to hydrate better than most of us!