PY Best results are obtained when seeding in the late spring or summer, when temperatures are consistently above 70 °F, as these conditions are ideal for seeding 1. Planting Area Preparation: New Lawns: Remove all debris from planting area and rake or Ul to loosen the top soil, Level area and grade to drain away from buildings. Overseeing Established Lawns: Mow the lawn as short as possible, rake thoroughly to remove any debris or dead grass and expose the sol. Bare Pols: Rake bo loosen the top Yam of soil.