How to pour curved concrete cement edging around a grass area

Written by emily patterson
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How to pour curved concrete cement edging around a grass area
Concrete edging between grassy area and walkway. (garden image by Hubert from

Concrete edging is a perfect, durable, and long-lasting edging solution. It creates an effective boundary between gardens and the lawn to prevent grass from growing into the garden area. The border between most grassy areas and gardens is often curved, so cement edging needs to be poured in such a way to match the curve and continue the smooth-flowing lines of the garden border.

Skill level:

Things you need

  • Shovel
  • Tape measure
  • Wooden stakes
  • Hammer
  • Level
  • 1/8 inch hardboard
  • Circular or hand saw
  • Exterior screws
  • Drill
  • Screwdriver bit
  • Crushed stone
  • Small sledgehammer
  • Cement
  • Concrete edging tool
  • Safety glasses or goggles

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  1. 1

    Dig a 4 inch deep trench around the grassy area about 4 inches wider than the desired width of the concrete edging.

  2. 2

    Cut hardboard into strips the desired height of the edging with an additional 4 inches that will be below the surface of the ground.

  3. 3

    Create the concrete form by placing hardboard in the trench on both sides of the planned edging area. Position the hardboard so 4 inches of hardboard are below ground level.

  4. 4

    Drive stakes spaced approximately two feet apart along one side of the trench with a hammer.

  5. 5

    Use a drill with a screwdriver bit to secure hardboard to the stakes with exterior screws.

  6. 6

    Start from one end of the trench; position the hardboard for the other side of the concrete form a consistent width from the hardboard that is already in position. Place a level across the trench on the tops of the hardboard sections so both sides of the form are the same height. Drive stakes into the ground and secure the hardboard sections to the stakes with exterior screws for the other side of the form.

  7. 7

    Pour two inches of crushed stone into the trench.

  8. 8

    Compact the crushed stone by dropping a small sledgehammer onto the stone along the entire length of the trench.

  9. 9

    Mix concrete in a wheelbarrow according to package directions. Stir with a shovel or hoe until the concrete is thoroughly mixed.

  10. 10

    Start from one end of the form and fill the form with concrete to the top of the hardboard form.

  11. 11

    When the concrete is firm, run a concrete edging tool with the curved edge of the tool against the form across both sides of the form to finish the corners of the cement edging. Allow the concrete to harden for 24 hours before removing the form.

  12. 12

    Remove the forms and backfill the space between the grassy area and concrete edging.

Tips and warnings

  • Remove the forms and backfill the space between the grassy area and concrete edging.
  • Plan this project for a time when rain is not expected for at least 48 hours.
  • Always wear safety glasses or goggles when using power tools and while compacting the crushed stone to protect eyes from flying debris.

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