Prepare the soil by tilling to a depth of 4–6 inches. Conduct a soil test to be sure your soil has the proper nutrients it needs for a healthy lawn. Apply fertilizer and lime at the recommended rates. If you are unable to conduct a soil test, apply lime and a complete lawn fertilizer according to the recommended rates on the packages. Work lime and fertilizer evenly into the soil, then rake the soil surface smooth to give the seed an ideal bed in which to establish healthy roots. Sow the grass seed by evenly spreading according to the recommended seeding rates. Rake, harrow or otherwise work the seed into the soil ¼” to ½” deep. Keep the area well-watered until the seeds germinate and the seedlings have grown sufficiently to establish a lawn, then water as needed.
Improving Bare Spots
Mow your lawn closely, then remove leaves, dead grass, etc. Rake, harrow lightly or aerate the bare spots to prepare the seedbed. Conduct a soil test to be sure the soil has the proper balance of nutrients. Fertilize and lime if needed.