What Should I Put Down First: Fertizer or Grass Seed?

New Lawn Seeding

• Most landscaping professionals agree that it is always best to fertilize the soil first if you are seeding a new lawn. It is also recommended to conduct a soil test so that you select the appropriate fertilizer. The results will dictate the appropriate levels of phosphorus, potassium and nitrogen to get the lawn off to a healthy start once the seeds are planted.

Established, Cool-Season Grasses

• Cool-season grasses include fescues, bluegrass and rye grass. Plant seeds to patch or re-seed an existing lawn. Aerate the area where you are re-seeding the lawn. Apply a heavier dose of nitrogen in the early fall to help build fortify roots during the winter. Then apply a mid-spring fertilization with less nitrogen to help promote thicker growth during spring and summer.

Established, Warm-Season Grasses

• Warm-season grasses include Bermuda and zoysia. They benefit from fertilization prior to re-seeding in the spring. This will improve growth and greening. Then fertilize again during the late summer and early fall. Use a bit more nitrogen during late summer and fall, and a bit less during the spring. Conduct a soil test to confirm the proper nutrients your lawn requires to achieve the best results.