Should I mix grass seed with topsoil when overseeding?

Do not put top soil over grass seed, but you can add a thin layer of organic matter to help the seed to germinate. 'Never put topsoil over newly planted grass seed,' says Yamaguchi. 'This won't provide healthy growing conditions – it will actually prevent the seedlings from sprouting by essentially suffocating them.


Should I add topsoil when overseeding?

Overseeding can also help with any bare spots in your lawn. To remedy bare spots, cover spots with topsoil before you overseed. This will improve the quality of the soil and help the grass grow.

Can you mix topsoil and grass seed together?

When placing topsoil over newly planted seed it will actually suffocate the grass seedlings and ultimately they never have the chance to even get started. There is a proper way to prepare the soil for planting grass.


What do you put on top of grass seed when overseeding?

If you're using grass seed to overseed your lawn instead of Scotts® Turf Builder® Thick'R Lawn™, it's a good idea to rake in a thin, 0.25-inch layer of enriched soil over your lawn to help the seed settle in. Don't put so much down that you kill your existing grass; less than a quarter of an inch is plenty.

How much topsoil can you put over grass seed?

Spreading a thin layer of about ¼ inch of this material will be able to protect the seeds from the common wind and even pests. It also helps to provide the soil with moisture retention.


DON’T make these 7 STUPID Mistakes when OVERSEEDING your LAWN



How do you overseed an entire lawn?

How to Overseed a Lawn in 8 Simple Steps
  1. Supplies Needed to Overseed a Lawn.
  2. Step 1: Dethatch and Aerate the Lawn (If Necessary)
  3. Step 2: Mow the Lawn Short.
  4. Step 3: Rake to Remove Debris.
  5. Step 4: Add Enriched Topsoil.
  6. Step 5: Spread the Grass Seed.
  7. Step 6: Fertilize the New Grass.
  8. Step 7: Water Your Lawn Generously.


Do you need to top dress when overseeding?

Helps Seed Germinate- If overseeding your lawn, top dressing allows seed to make direct contact with soil which is best for germination.

Should grass be wet or dry when overseeding?

Mow the lawn prior to overseeding. Water the lawn to moisten the soil, but make sure it's not soaking wet. A good rule of thumb is to water the day before you plan to overseed so the soil has a little time to dry.


How much seed should I put down when overseeding?

If most of your lawn already has thick grass growth, overseeding will be a general maintenance task. In this case, you should use two to four pounds of seed for every 1,000 square feet of lawn. However, if your lawn has exposed areas of soil, apply four to eight pounds of seed per every 1,000 square feet.

Can you just sprinkle grass seed on top of the dirt?

The aeration is able to loosen the soil and also activate the nutrients and make it easier for the seed to absorb when it is putting down its roots. Both of these treatments are performed right before the seed has been planted. If the seed is just thrown on the ground it will cause poor germination.

How long does grass seed take to grow when overseeding?

Depending on conditions and type of seed, new grass seed will begin to emerge in 5-7 days after seeding when moisture and soil temperatures are adequate. An overseeded lawn can be fully established in eight weeks or less. Proper watering is critical to successful overseeding.


What time of day is best to overseed lawn?

You also need to pick the best time of the day for the procedure – do it early in the morning, on a warm, sunny day, to allow the new seeds to make the most of the great weather. Sprinkle the new seeds around the lawn and water the reseeded area gently, paying attention not to wash them away.

Do I need to aerate before overseeding?

Aeration will help ensure your soil is ready to absorb all of the nutrients and seeds that come its way with topdressing and overseeding. That's why you should aerate before overseeding.

Can you put down too much overseed?

Ignoring recommended seeding rates

Don't overdo or cut corners. Too much grass seed causes undue competition for resources such as light, water and nutrients, and grass seedlings struggle as a result.


What is the best top dressing for overseeding?

Spread after aeration, the compost works down into the aeration holes and improves the soil. Ohio State University recommends ¼ inch of Comtil Compost as the best topdress option. Aeration, overseeding and topdressing are usually done together as a TOTAL LAWN RENOVATION.

How short do you cut grass before overseeding?

So to give the seed a better chance, mow the existing grass slightly shorter than you normally would cut it. For example, normally you should cut grass to a height of 3 to 3.5 inches. But to prepare for overseeding, reduce that height to 1.5 to 2 inches.

Is October too late to 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.


Should I overseed twice?

It is recommended to fill in a lawn with 50% or more grass coverage. However, at 50% you will likely need overseeding twice to get the lawn to 90-100%. Just throwing seed on your lawn without aerating or working up the soil will have little to no positive effect on your lawn.

Will grass seed grow if I just throw it down?

The short answer – is yes. Grass seed can grow if you just throw it on the ground, but the success of the germination will be much different compared to when you do the right preparation and sowing technique.

How long do you have to water after overseeding?

The goal is to keep the top ½ inch of soil moist for at least two to three weeks. After then, watering may be cut back to once a day or every other day, again depending on weather and watering times.


How many times a year should you overseed?

Make it an annual practice.

"Annual overseeding is recommended to thicken lawns and make them more attractive, but also to introduce improved varieties of grass that are hardier, less prone to insects and diseases, and more drought tolerant," explains Mayer.

What month is the best time to seed or overseed a 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.

How often should I water my grass after overseeding?

Water the over seeded area thoroughly for not less than half an hour. This will make the seed wash deep into the soil. For First week water the lawn three times a day. For second week water two times a day and for the third week once in a day watering is enough.


Will grass seed grow on top of grass?

Overseeding is spreading grass seed over an existing lawn. Done right, it's a straightforward process that gets results. As grasses mature, thinning is normal—especially if you enjoy your lawn and use it often. Overseeding keeps your lawn competitive and steeped in youth and vigor, without starting over from scratch.