Till the area with a garden tiller. Use a non-selective herbicide to kill the existing grass and weeds in an established lawn before tilling. Rake the area with a garden rake to remove rocks, grass roots and large clods of soil.
Water the area where sod plugs will be planted. Dig a row of holes 12 inches apart with a bulb planter. Place a small amount of fertilizer in each hole.
Place a sod plug into a hole and fill the rest of the hole with soil. Pat the surrounding soil to remove air pockets. Repeat to plant plugs in each hole.
Dig another row of holes 12 inches from the first row. Space each hole 12 inches apart. Plant the plugs as directed in Step 3.
Water the area after planting is complete. The plugs must be watered daily for 10 days, or until they have established roots. Do not cut the plugged area for a minimum of two weeks.