Caleb MorganBy Caleb Morgan

Updated November 2026

Landscape edging next to sidewalk gives you a crisp border between hardscape and turf, keeps mulch and soil off the concrete, and makes mowing faster. You can do the job in a weekend with basic hand tools by marking a clean line, setting the edging at the right height, and securing it so it holds through freeze-thaw cycles and regular mowing.

Plan the Layout and Check for Hazards

Before you buy material, walk the run and decide where the edging will sit. Most installers leave a gap of 1 to 2 inches between the sidewalk edge and the edging so that a mower wheel can ride the lawn side without catching the concrete. Mark the line with a garden hose or spray paint, then step back and check it from several angles.

Shopping for one? See our guide: 6 Best Easyflex No Dig Landscape Edging Kit Options for Clean Lines (2026).

Call 811 before you dig. In the US, this free service marks buried utility lines, and it is required in most states before any digging. Also look for irrigation heads, low voltage lighting and tree roots near the path.

Choose the Right Material for Sidewalk Edges

Sidewalks take a lot of foot and vehicle traffic, and the edging sitting against them needs to resist being pushed out of line. Steel and aluminum strips with stakes tend to hold position well along hard edges. Stone or brick works if you set it on a compacted base. Plastic and rubber options are easier to install but can shift if the ground is soft, so check how they anchor before you commit to a long run.

  • Steel or aluminum strip: thin profile, sits flush, pairs well with a tight mower path.
  • Stone or paver edging: durable and attractive, but needs a 2 to 3 inch gravel base.
  • Composite or plastic: lightweight and quick to set, best where the soil is firm.

Install the Edging Step by Step

  1. Dig a shallow trench along your marked line, about 1 inch deeper than the edging is tall, so the top sits just above grade.
  2. Lay a 2 to 3 inch layer of crushed stone in the trench if the soil is loose or clay-heavy, and tamp it firm.
  3. Set the edging in the trench, keeping the top edge level with the sidewalk surface or slightly below it.
  4. Drive stakes or pins every 12 to 18 inches on the lawn side, angled slightly toward the edging to pull it tight.
  5. Backfill with soil or gravel on the lawn side and tamp it lightly so the edging stays upright.
  6. Check the line with a string or level as you go, correcting any dips before moving on.

If you need a deeper walkthrough for a specific material, the guide Landscape Edging Along Sidewalk: A Step-by-Step Guide for Clean Lines covers the same layout steps in more detail, and Steel Landscape Edging Installation: A Step-by-Step Guide for Clean Borders explains how to set metal strips without kinks.

Keep the Line Clean After Installation

Once the edging is set, the main job is maintenance. Trim the grass along the edge with a string trimmer held at a slight angle so the blade does not strike the sidewalk. Pull grass roots that creep under the edging, and rake mulch back from the line after storms. Plan to recheck stakes once a year, since ground heave can loosen them.

For a more general look at options that handle sidewalk edges, What Are the Best Options for Landscape Edging? 7 Choices Compared compares common materials side by side.

A sharp flat spade gives you a clean trench wall, which matters more along a sidewalk than almost anywhere else in the yard. A four-foot level or a mason’s string line helps you hold the top edge straight over a long run.

Common Mistakes to Avoid

  • Setting the edging flush with the sidewalk, which makes mowing and trimming scrape the concrete.
  • Skipping the gravel base in soft soil, which lets the line sag within a season.
  • Placing stakes too far apart, so the edging bows outward under pressure from mulch and roots.
  • Digging without a utility locate, especially near driveways and sidewalk joints where lines often run.
  • Ignoring drainage, which can cause water to pool against the edging and wash out the base.

FAQ

How far from the sidewalk should landscape edging be placed?

Most installers leave 1 to 2 inches between the sidewalk edge and the edging. This gap lets a mower wheel ride the grass without scraping concrete.

Do I need a concrete base for edging next to a sidewalk?

Usually not. A 2 to 3 inch layer of compacted crushed stone is enough for most materials, though heavy stone or large sections may need more support. For structural concerns, consult a landscape contractor.

Can I install edging myself, or should I hire someone?

Most homeowners can handle a straight run with basic tools in a weekend. Large sections, slopes or buried utilities near the sidewalk are good reasons to call a licensed landscape professional.

Conclusion

Good landscape edging next to sidewalk comes down to a clean layout, a stable base and secure anchoring. Mark the line carefully, check for utilities, and set the edging just below the sidewalk surface. A little attention to the gap and the stakes will keep the border sharp for years.

Ready to choose one?

Caleb Morgan

About Caleb Morgan

Caleb Morgan is part of our editorial team and reviews and edits our lawn edging & trimming guides, checking product details against manufacturer specifications and owner feedback.