How to Till a Lawn for Better Soil & Grass Growth

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Whether you intend to install a new lawn or improve an old one, tilling readies the soil for new seeds. To till, you’ll need to clear the lawn of debris and existing greenery. [1] Spread fertilizer to provide nutrients for the new seeds. When you dig up the lawn with a shovel or rototiller, the fertilizer will mix with the aerated soil [2] , helping you achieve a lush lawn that’s the envy of the neighborhood. Before you start, you should call 811 'Digline' to request utility locations at least 2 days prior to beginning to dig and follow all directions completely. [3]

Part 1
Part 1 of 4:

Removing Debris

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  1. Your lawn collects a lot of junk over the years and it’s time to remove it. Sticks from nearby trees, rocks, and large weeds are all easy enough to spot and remove. Don’t forget to pick up litter left behind from a BBQ or the neighbor’s children.
    • If you have underground sprinklers, locate and flag all heads, valve boxes, controller wiring, and any other sprinkler parts. If you don't do this, you run the risk of damaging your irrigation system. [4]
  2. A beautiful lawn deserves flat land, but rocks get in the way of tilling. Dig under rocks and any visible roots you spot. Set them aside, far away from your lawn. [5] As you work, stay vigilant for any rocks hidden under the surface and remove them too. [6]
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  3. If you're not planning on cutting sod, purchase topsoil at a gardening store and use it as filler. Alternatively, scrape dirt from higher points on your lawn. When you’re finished, rake over these areas to even out the soil.
    • This is a good time to take a few soil samples for testing to ensure proper nutrient levels and proper PH balance.
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Part 2
Part 2 of 4:

Cutting Grass into Sod

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  1. Cutting sod means removing the top layer of the soil. Since this leaves the soil bare, it’s perfect for creating a clean garden bed ready for prep work prior to planting. Start by outlining the area you wish to dig with spray paint. Push a spade about six inches deep (15.2 cm) along these boundaries. This is deep enough for the spade to cut under grass and weed roots. [7]
    • You may also rent a sod cutter from a home improvement store. It’ll do the same job as your spade and save you some work if you don’t mind spending some money.
    • Sodding is easier when the soil is damp but not saturated to the point of puddling. Wait for a light rain to pass.
  2. Use a yardstick or your judgment here. Walk along one edge of the sod, measuring out no more than twelve inches (30.5 cm) at a time. Mark each spot by pushing your spade down like you did before. Now you’ll need to dig lines all the way across to the other side. Make the lines as straight as possible. It’s tricky, but you can lay a string or hose to guide you. [8]
    • For best results, use a half moon shaped manual edging tool.
  3. If you were to roll up the sod now and try carrying it, you’d throw out your back. Instead, take the time to divide the sod further. Measure between one and three feet (30-90 cm) along the length of the strips. Use your spade to dig down again, splitting the strips. Continue doing this until all the strips are divided.
  4. Go back to the edge of the sod. Try to pick up one of the strips. Your spade can help you lift it. If you see any roots clinging for dear life, sever them from the remaining soil with your spade or a sharp knife. Once the sod is free, roll it up like carpeting. Every strip after this first one will be easier to roll, so keep going and roll them all.
    • Sod from a healthy lawn makes a great base for your lawn or garden. Either compost it or turn it upside down over the cleared area before you begin tilling.
    • Unwanted sod may be taken to a waste center that accepts organics. Any city dump is bound to take it, but you may also be able to find home or business owners that will buy it for compost.
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Part 3
Part 3 of 4:

Killing Old Vegetation

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  1. Killing the old lawn may feel tragic, but it is the simplest way to clear a large space and start fresh. Glyphosate weedkillers such as Roundup kill grass as well as weeds. If weeds overran your old lawn, it’s important to get rid of them before you till. Make sure you cover nearby plants with plastic and keep family away while spraying.
    • Please note: The WHO considers glyphosate to be a probable human carcinogen. Its use is prohibited in some states and countries. Please check with your local laws and use caution if handling this chemical.
    • Be sure to follow all directions properly and wait the recommended time to allow the weed killer to dissipate before beginning prep work.
    • If you don’t get rid of the weeds now, tilling can spread them further. Don’t let them take over your new lawn!
  2. Go to the home improvement store and purchase black poly film or a similar lawn coloring. Drape this covering over your lawn and hold it down with stakes and bricks. Watch as the grass turns brown after a few weeks. When the grass is dried out and fully brown, remove the covering. [9]
    • This option is good for when you don’t want to mess with chemicals or rent a sod cutter. However, be sure to leave it on long enough to kill the entire root systems of the unwanted vegetation, or it may grow back in time.
  3. You’ll need a sturdy rake and some muscle power for this. Clear all the plant matter off the soil. It sounds like a lot of effort, but think of the workout you’ll get. At the end of the day, your reward is flattened soil ready to grow you a luscious lawn.
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Part 4
Part 4 of 4:

Tilling the Soil

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  1. [10] Softening the soil will make your job much easier. A light rain will serve you well, but weather is unpredictable. For bone-dry summer soil, break out the garden hose. Spray water until the soil is moistened about two inches (7.6 cm) deep. Dig down that far and check to see that the soil is moist rather than soggy.
    • Roll some of the soil between your fingers. Moist soil clumps together when rolled but falls apart when you press it flat.
  2. [11] Cover the soil with the substances you want to mix into it. Any amendments you find useful, such as new topsoil or sand for hard, slow-draining lawns, go first. Spread them an inch (2.5 cm) thick. Regardless of what you do, cover the area with two inches (5.1 cm) of fertilizer or compost. Look for store-bought products formulated for new lawn growth. [12]
    • You may spread these by hand and even them with your rake, but a machine spreader saves a lot of time.
  3. Rototillers are machines that break up and overturn soil. Rototillers can be rented at a reasonable cost from a home improvement store. Look on the side of the rototiller for a depth bar. Adjust it so it’s set between six and eight inches (15.2-20.3 cm). [13]
    • If you don’t want to rent a rototiller, you can dig up the lawn with a spade or shovel. Unless you’re digging a small garden patch, this takes a lot of labor, so the rototiller is worth the cost.
  4. Imagine the rototiller is a lawnmower, because you’ll use it the same way. Run the rototiller over one edge of the lawn. When you get to the end, turn around and go back, staying next to the first line you completed. Continue the pattern until you’re finished. Don’t leave any gaps between the lines.
    • It’s best to avoid tilling near any trees you have. The rototiller can damage their roots.
  5. Go over the lawn a second time to ensure the dirt is well-broken. This time, go in the opposite direction. If you went from left to right before, go from top to bottom this time.
  6. [14] Drag the rake prong-side down. Level out the soil and it’ll be ready for planting.
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Expert Q&A

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  • Question
    What is the purpose of tilling?
    Keith Souza
    Home Improvement Specialist
    Keith Souza is a Home Improvement Specialist and the Owner of Vaulted Hammer Handyman Services. He specializes in home repair, home automation, and yard maintenance. Keith holds an AAS in Electronics Technology from Heald College.
    Keith Souza
    Home Improvement Specialist
    Expert Answer
    Tilling helps aerate your soil. It also gives you a chance to add extra nutrients and amendments, like manure, fertilizer, and mulch.
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  • Question
    What happens when you till soil?
    Keith Souza
    Home Improvement Specialist
    Keith Souza is a Home Improvement Specialist and the Owner of Vaulted Hammer Handyman Services. He specializes in home repair, home automation, and yard maintenance. Keith holds an AAS in Electronics Technology from Heald College.
    Keith Souza
    Home Improvement Specialist
    Expert Answer
    Tilling soil just involves digging up the soil and turning it around. This gives the dirt some room to breathe.
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  • Question
    How do I prepare my lawn for tilling when replacing old grass?
    Tony Hoang
    Landscaping Manager
    Tony Hoang is a Landscaper and the Principal at H&J Landscaping & Concrete Contractor in Newark, CA. With over six years of experience, he specializes in designing the perfect concrete driveways & backyard patios for homes. H&J Landscaping & Concrete Contractor is a 4.5-star business on Yelp.
    Tony Hoang
    Landscaping Manager
    Expert Answer
    Getting your lawn ready for tilling takes a few steps. First, make sure the soil is moist before you start tilling — that makes it much easier to work with. Once you've tilled thoroughly, go over the area and remove any rocks or stones that the tiller brought up. Take a rake and smooth out the soil so it's nice and level. At that point, you can test the soil and add things like compost or fertilizer if needed. After you seed or lay down new sod, roll over everything with a lawn roller to get rid of air pockets from tilling. Doing all that prep work will give your new lawn the best chance to grow thick and healthy.
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      • If plants struggled to grow where your lawn will be, the soil’s pH may need adjusting. You can get a soil testing kit from your local home improvement store.
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      Things You’ll Need

      • Rake
      • Spade
      • Plastic lawn covering
      • Weedkiller
      • Fertilizer
      • Rototiller
      • Spreader
      • Correct seed for your area

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      Expert Interview

      Thanks for reading our article! If you’d like to learn more about gardening, check out our in-depth interview with Tony Hoang .

      References

      1. ↑ Tony Hoang. Landscaping Manager. Expert Interview. 29 September 2023.
      2. ↑ Keith Souza. Home Improvement Specialist. Expert Interview. 20 August 2021.
      3. ↑ Keith Souza. Home Improvement Specialist. Expert Interview. 20 August 2021.
      4. ↑ Keith Souza. Home Improvement Specialist. Expert Interview. 20 August 2021.
      5. ↑ Tony Hoang. Landscaping Manager. Expert Interview. 29 September 2023.
      6. ↑ http://www.popularmechanics.com/home/lawn-garden/how-to/a9557/7-steps-to-seeding-a-new-lawn/
      7. ↑ https://dengarden.com/landscaping/How-I-Turned-a-Weed-Filled-Lawn-Into-a-Garden-Plot
      8. ↑ http://www.finegardening.com/4-ways-remove-sod
      9. ↑ https://www.familyhandyman.com/landscaping/lawn-care/lawns-how-to-reseed/
      1. ↑ Tony Hoang. Landscaping Manager. Expert Interview. 29 September 2023.
      2. ↑ Tony Hoang. Landscaping Manager. Expert Interview. 29 September 2023.
      3. ↑ http://www.popularmechanics.com/home/lawn-garden/how-to/a9557/7-steps-to-seeding-a-new-lawn/
      4. ↑ http://www.dummies.com/home-garden/lawn-care/controlling-weeds-before-you-plant-your-lawn/
      5. ↑ Tony Hoang. Landscaping Manager. Expert Interview. 29 September 2023.

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