How Do You Prepare Grass for Fall Overseeding

Mow Low. Before overseeding your thin lawn, cut your grass shorter than normal and bag the clippings. After mowing, rake the lawn to help loosen the top layer of soil and remove any dead grass and debris. This will give the grass seed easy access to the soil so it can root more easily after germinating.

When should I start overseeding in the fall?

Hands down, early fall is the best time to overseed your lawn. The absolute sweet spot for most northern regions of the U.S. is August 15 to September 15. That’s when daytime temperatures are still warm enough to encourage growth and nights get cooler, giving new seedlings a break from the heat. Lawn grasses like that.

Do you need to aerate your lawn before overseeding?

The best time to aerate your lawn is during the fall before you begin a fertilization program or decide to overseed. … Aeration will help ensure your soil is ready to absorb all of the nutrients and seeds that come its way with topdressing and overseeding.