You can fertilize your lawn before or after overseeding. Both tactics work to feed your new grass seed. It's best to fertilize within 3 days of seeding. This means you can spread your starter fertilizer a few days before you lay down your seed or a few days after.

Should you overseed before or after fertilizing?

Stop fertilizing for at least a month before overseeding. The fertilizer makes your grass grow faster, which makes it harder for the new seeds to take hold.

Can I overseed and fertilize at the same time?

Should You Fertilize Before, During, Or After Overseeding? You can overseed and fertilize in any order, although many choose to do them simultaneously to save time. In the case of doing these steps separately, they should be done within 3 days of each other.

Should I put down fertilizer before grass seed?

When seeding a lawn, you should never apply the fertilizer and seed together. This can cause an uneven distribution of the materials resulting in patchy areas or seedlings burned by excess fertilizer. It is best to spread the fertilizer just prior to planting the seed.

When should I fertilize and reseed my lawn?

Fall is the best time. The autumn season comes with a mix of warm soil and cool air, perfect for planting grass seed and allowing time for new grass roots to develop before winter sets in. It is also a good time to fertilize to build stronger, deeper roots for winter, resulting in a thicker, greener lawn next spring.

Grass Seed or Fertilizer First?

Do I need to aerate before overseeding?

The most important step you can take before overseeding your lawn is aerating your soil. No matter what seed you use, they can't germinate in compacted soil devoid of water, nutrients, and sufficient air exchange. That's why it's crucial to aerate your lawn before starting the overseeding process.

Do you need topsoil when overseeding?

Topsoil doesn't bring as many benefits for overseeding. When choosing between the two, use compost as your top dressing. When overseeding, use compost, not topsoil. Compost provides more nutrients and moisture than topsoil.

How do I prepare my lawn for 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.

Can you overseed right after aerating?

Overseed After Aeration. Once aeration is complete on an existing lawn, start overseeding within 48 hours and then water the lawn lightly to ensure good soil contact with your new seed. During this time window, seed and fertilizer have a better chance of getting deeper into the aeration holes, which is what you want.

How late can you overseed?

When it's October, people often wonder if it is too late to plant new seed. The good news is if you hurry, seed can still be planted in October with the hope that it will survive the upcoming winter. Although September is the best time, often we can still plant grass seed up to October 15 with good results.

What time of year is best to overseed lawn?

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.

What is the best month to aerate my lawn?

The best time to aerate your lawn is in late summer or early fall, as this will allow your grass to recover completely before going dormant in the winter. While Fall is recommended, you can also aerate and overseed your lawn in the spring between March and May.

Can I put grass seed on top of grass?

Overseeding is a simple process of adding seeds to the lawn to improve its quality and appearance. While seeding, the gardener adds grass seeds to the prepared soil in order to grow grass from scratch; on the other hand, overseeding is when the gardener scatters grass seeds onto a pre-existing lawn.

What is the best fertilizer for overseeding?

Use a slow-release nitrogen fertilizer, such as Milorganite, when overseeding. Mixing Milorganite with the seed not only makes nutrients available to the grass when it needs it, it also makes it easier to see where the tiny seeds have been broadcast.

Should I top dress when overseeding?

You should topdress when overseeding to keep seeds in contact with moist soil so they can germinate readily. It is also essential to test the Cation Exchange Capacity (CEC) of the soil before top dressing to judge the fertility of your lawn.

Can you put too much grass seed down?

All plants, including grass plants, need adequate soil space for roots to spread and develop. If you put down too much grass seed, you will encourage competition that will cause your grass seedlings to struggle after germination because there will be excessive competition for sunlight, soil nutrients, and water.