Grass seed germinates best when sown between late summer and early fall. September is best for most areas of the country. Turf can be seeded in the spring, but the competition from emerging weeds and the ensuing heat of the summer months can stress young grass.
Dispersing seed onto bare, undisturbed ground will yield poor results. The site should be prepared by either adding a layer of topsoil prior to seeding or by disturbing the existing soil with a hard-tooth rake. Once the seed has been broadcast, the top of the seed should be grazed with a rake to lightly work it into the soil. The seeded area should be mulched with straw at a rate of 1 bale per 1,000 square feet.
Once the seed is in place, adequate watering is essential. As the seed begins to germinate, light and frequent waterings are recommended. As soon as the blades start to appear and fill in, watering should be less frequent, but deeper.