Is it OK to put topsoil over grass seed?

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.


Can I just put topsoil over grass and reseed?

Adding soil over grass can be another effective form of repairing a lawn. It is possible to dump new soil over top of what you have, and prepare it for sod or seed. This option will save you money on excavation costs of removing the old soil and grass.

What happens if you put topsoil over grass?

Timing Topsoil

Topdressing a lawn puts enough strain on the grass that it could kill part or all of the grass. The best time to add topsoil to a lawn is a few weeks after the grass has begun growing actively. Growing grass recovers from the strain of new soil more effectively than dormant grass.


How much topsoil do you put over grass seed?

Grass roots grow between 4 and 6 inches long, so a layer of topsoil that's 6 inches deep provides enough room for the roots to grow.

Will grass seeds germinate on top of soil?

Will grass seed germinate on top of the soil? Yes; in fact, germination will suffer if too much soil is placed on top of the seeds. The experts at Jonathan Green recommend placing a thin layer of mulch or topsoil over them to help keep them moist and warm and promote growth.


Top Dressing and Top Soiling your Lawn



What goes first topsoil or grass seed?

If you're tackling bare spots on your grass or thinning areas from weather and wear damage, you can overseed for a greener, thicker lawn. Before you spread your grass seed to patch and repair, you'll want to first fill in bare area on your lawn by spreading a 1-inch-thick layer of topsoil over the sites.

Can you just throw grass seed on soil?

Grass seeds are not strong enough to grow through soil. They're meant to be placed on top of loose, prepared soil. Germination can quickly suffer from too much soil on top of them.

Will grass grow in topsoil?

Topsoil Uses Can Include Fixing Uneven and Patchy Lawns

You may even notice areas of your yard that are slightly uneven. Topsoil is a great remedy for both problems. To grow grass, simply spread topsoil across the area so it is 1 inch deep. Evenly distribute grass seeds and till the soil to combine.


Can you overdo grass seed?

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. Too little seed leaves lawns thin or bare.

Can you sprinkle too much grass seed?

By spreading too much grass seed, however, you encourage root competition between each seedling as they attempt to grow. This can lead to some seeds pushing through the soil quickly, absorbing their portion of moisture and nutrients whilst others fail altogether.

What do you put on top of grass seed?

When seeding new lawns, it's generally recommended that a thin layer of mulch be scattered on top. That mulch really only has one purpose – to hold in moisture to keep the seeds from drying out. It's not as necessary when over seeding older lawns, because the existing grass helps hold in moisture.


Will grass grow through top dressing?

Topdressing is the best way to rejuvenate your lawn without pulling up all your grass (which is a pain) and starting over. As your grass grows through the layer of topdressing, the organic material is incorporated into the soil beneath it, adding nutrients and improving soil quality.

How long does it take for grass to grow through topsoil?

Updated July 22, 2022. Depending on the turf species, it can take anywhere between five and 30 days for grass seed germination to begin. After that, it takes another three to four weeks before the grass is long enough to mow.

Can I just throw grass seed on bare spots?

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.


What happens if you don't cover grass seed?

Very little soil is actually needed to cover the seeds, typically about ¼- inch, so simple raking will do the trick. If the seeds are not properly protected by existing grass or a thin layer of topsoil, they may dry before germination or be washed away by rain.

How long does grass seed take to sprout?

Whether you're repairing bare spots, overseeding an existing lawn or starting from scratch, you can generally expect grass seedlings to emerge within seven to 21 days when grown under proper conditions. It may take another three to four weeks of growth before grass is long enough to mow.

Can you plant straight into topsoil?

We, therefore, recommend it should not be planted directly into, but mixed with the existing soil to give it a much-needed boost!


How deep should topsoil be for grass?

Turf ideally needs around four inches of top soil to root in. Not everyone will need to add four inches however, you may just need to add an inch or two depending on the quality and depth of the existing soil.

Can you put topsoil over grass to level?

Spread a layer of debris-free topsoil or potting soil into the hole—enough to bring the turf patch level with the surrounding lawn. As you work, water the soil lightly to remove air pockets; this helps to prevent future settling. Replace the turf patch, pressing the grass back into place with your hand or foot.

What month should I put grass seed down?

In many climates, the best time to plant grass seed is in the autumn. The still-warm soil of late August, September, October, or November encourages optimum root growth, while the cooling air temperatures discourage excessive top growth. This is perfect for establishing lawn grasses and promoting extensive root growth.


How do you make grass seed germinate faster?

Use a “mist – lightly water – deeply water” process like this: After seeding and fertilizing, you'll want to keep the top inch of soil moist until the seeds start to germinate (aka sprout). This means misting the area once a day, maybe twice if it's unusually hot out there—but don't let the area get soggy.

Should you water in topsoil?

Topsoil is naturally more dense than 80/20 and has a higher clay content. As a result of this, it does not drain quite as well, so should only be used lightly when top dressing your lawn. It is also extremely important to sufficiently water topsoil into your lawn.

Do you put grass seed down before top dressing?

If you are applying a heavy amount of topdressing, it is best to spread the seeds once you are finished in order to help ensure even seed placement. However, if you are simply applying a light topdressing to give your lawn a little boost, you can lay the seed before applying the topdressing.


Should I top dress or overseed first?

If you plan on overseeding, do this after the topdressing is down. The reason for doing it after you top dress, is so you don't bury the seed too deeply. If you overseed, remember to keep the soil moist, but not too wet, until seeds have germinated.

What's the best topsoil for grass?

Why compost is the best top dressing for a lawn
  • It can be finely screened (which means no big chunks of it sitting on your lawn after it's been spread).
  • It's easy to distribute over the turf (more on this process later).
  • It contains a perfect balance of macro- and micro-nutrients that are slowly released over time.
Previous question
How long does polyamory last?
Next question
Does washing kill flea eggs?