By Caleb MorganUpdated November 2026
Landscape edging along sidewalk creates a clean, defined border between your walkway and the lawn or bed beside it. Done right, it stops grass from creeping onto concrete, keeps mulch where it belongs, and makes trimming far faster. This guide walks through planning the line, choosing an edging type, and installing it so it stays put.
Plan the Line Before You Dig
Start by marking the edge with a garden hose or spray paint. Curves look best when they are gentle, with a radius of at least 3 to 4 feet, because tight bends are hard to follow with a mower and make edging materials kink. Keep the border a consistent distance from the sidewalk, usually 2 to 4 inches of lawn or bed width, so the finished line looks intentional.
Shopping for one? See our guide: 6 Best Easyflex No Dig Landscape Edging Kit Options for Clean Lines (2026).
Check for buried utility lines before digging. Call 811 in the United States at least a few days before any excavation, and keep the edging out of the strip where irrigation heads and wiring run.
Choose the Right Edging Type for Sidewalk Borders
Sidewalk edging takes a lot of foot traffic and mower contact, so it needs more rigidity than a decorative garden bed border. Pick a material based on how the area is used and how much soil pressure it will face.
| Edging type | Best use | Main tradeoff |
|---|---|---|
| Steel or aluminum strip | Curves and tight lines along concrete | Can dent if hit hard by a mower |
| Poured concrete | Long, permanent borders | Harder to change once set |
| Pressure-treated lumber | Straight runs and raised beds | Needs periodic inspection for rot |
| Recycled plastic | Flexible curves, low maintenance | May flex if not staked closely |
For a broader comparison of materials, see What Are the Best Options for Landscape Edging? 7 Choices Compared. If you want a metal option that stays flush with the soil, Steel Landscape Edging Nearby: How to Find the Right Option (2026) covers what to look for.
Install Landscape Edging Along Sidewalk Step by Step
Once the line is marked and the material is chosen, installation is mostly about trench depth and keeping the top edge level with the sidewalk or slightly below it.
- Mark the line with paint or a hose, then cut sod along the outside of it with a flat spade or sod cutter.
- Dig a trench about 1 inch deeper than the edging height, so the top sits roughly level with the sidewalk surface.
- Set the edging into the trench, checking with a level every few feet and shimming with sand or gravel where needed.
- Drive stakes or spikes on the lawn side at intervals of about 12 to 18 inches, angled slightly toward the edging to hold it upright.
- Backfill the soil against the lawn side, tamp it lightly, and water the area to settle the ground.
For metal strips, the mechanics are similar but spikes are more important, as shown in Spikes for Landscape Edging: A Step-by-Step Guide to Clean Lines. For concrete, the forms must be set and leveled before pouring, as described in Poured Concrete Landscape Edging: A Step-by-Step Guide for Clean Lines.
Maintain the Border Over Time
Once installed, check the line each spring. Frost heave and mower bumps can shift sections out of level, and a quick reset of a few stakes prevents bigger problems later. Keep the edge trimmed with a string trimmer held at a slight angle, and avoid letting grass build up against the outer face of the edging.
Common Mistakes
- Setting the edging too high, which makes the lawn side slope into a gap and invites erosion.
- Skipping stakes on curved sections, where edging tends to bow outward over time.
- Placing the border on top of soil instead of in a trench, so it sits crooked after the first rain.
- Ignoring the sidewalk slope, which can leave water pooling against the edge.
- Installing without checking for buried lines first.
Recommended Gear
A flat sod cutter speeds up removing the strip of turf along the line, which is the most tiring part of the job. View on Amazon
A four-foot level keeps the top edge consistent along a long sidewalk run, something a short level makes hard to judge. View on Amazon
Steel landscape stakes hold edging upright without shifting, especially on curved sections. View on Amazon
FAQ
How deep should landscape edging along sidewalk be buried?
Most edging should be set so the top sits level with or just slightly below the sidewalk surface. Burying about 2 to 3 inches of the edging height is typical for stable installation.
Can I install sidewalk edging without digging a trench?
Some no-dig kits use stakes and surface placement, but they tend to shift sooner in high-traffic areas. A shallow trench gives a more durable and cleaner line.
How often should sidewalk edging be checked?
Inspect it at least once a year, usually in spring after the ground thaws. Reset any sections that have heaved or leaned.
Conclusion
Landscape edging along sidewalk takes careful layout, the right material, and a shallow, level trench. Stake the line well and check it yearly to keep clean edges through every season. With those steps, your walkway border will look sharp and stay easy to maintain.
Related reading
Ready to choose one?
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.
