By Lauren HollandUpdated November 2026
Steel landscape edging installation comes down to four jobs: mark a clean line, cut a trench to the right depth, set the strips level and anchor them so they stay put. Done in that order, a run of steel edging holds a straight border for years and keeps mulch and turf where they belong. This guide walks through each stage so you can finish a typical bed in an afternoon.
Plan the Layout and Gather Supplies
Start by marking the border with a garden hose or spray paint. Curves look best when they flow in long arcs rather than tight bends, and steel edging bends more easily along gentle curves than sharp corners. Measure the total run so you know how many strips to buy, and add about 10 percent for cuts and overlaps.
Shopping for one? See our guide: 7 Best Steel Edgings for Landscape Options for Clean Lines (2026).
Before you dig, call 811 or your local utility locator service to have underground lines marked. This is free in most areas and skipping it is a real hazard.
Tools and Materials Checklist
- Steel edging strips, typically sold in 8 or 10 foot lengths
- Stakes and couplers made for the same edging profile
- Half-moon edger or flat spade
- Rubber mallet or dead-blow hammer
- Line level and a straight 2×4 or screed board
- Metal cutting blade for an angle grinder or a bolt cutter for light gauge stock
- Gloves and eye protection
Dig the Trench to the Right Depth
Cut a trench just outside your marked line, roughly 2 to 3 inches wide and deep enough that the top of the steel sits about 1 inch above grade. Most installers aim for the strip to sit flush with or slightly above the lawn so a mower wheel can ride over the edge. Keep one wall of the trench vertical so the strip stands plumb.
Remove any roots, rocks and debris from the bottom. A firm, level base prevents the edging from settling unevenly after the first heavy rain.
Set, Align and Anchor the Steel Strips
Place each strip in the trench with the top edge facing up and the flat face toward the bed. Check alignment every few feet with the line level, adjusting the height by tamping soil under the strip. Use the screed board across the top of two adjoining strips to keep them even.
Drive stakes through the pre-punched holes or along the outside face at intervals of about 12 to 18 inches, following the spacing listed in the manufacturer’s instructions. Set the top of each stake slightly below the edging so the head does not stick up into the mowing path. Tap gently with the mallet to avoid bending the steel.
Join Sections and Handle Curves
Overlap or connect strips with the couplers made for that profile, and make sure the joints line up flush. For curves, bend the strip gradually by hand or flex it around a fixed object, then secure it with extra stakes. Avoid kinking the metal, since a crease weakens the edge and shows in the finished line.
Backfill, Clean Up and Check Your Work
Backfill the trench with soil or sand, packing it firmly against the outside of the strip so it cannot wobble. Sweep the lawn side and bed side, then recheck the top edge with the level. Install a light layer of mulch or sod to finish the look.
Common Mistakes
- Skipping the utility locate before digging.
- Leaving the top of the strip too high, which creates a tripping edge and mower bump.
- Spacing stakes too far apart, so the strip bows between them.
- Bending sharp corners instead of cutting and joining a mitered piece.
- Backfilling loosely, which lets the strip lean over time.
Recommended Gear
A dead-blow hammer drives stakes and seats strips without marring the steel face. View on Amazon
A line level keeps the top edge consistent across long runs, which is where most visible waviness comes from. View on Amazon
An angle grinder with a metal cutting disc handles clean cuts on steel strips and corners. View on Amazon
For more detail on specific profiles, see How to Install Steel Landscape Edging: A Step-by-Step Guide for Straight Lines and How to Cut Steel Landscape Edging: A Step-by-Step Guide for Clean Borders. If you are comparing materials, Corten Steel Landscape Edging: A Step-by-Step Guide to Clean Borders covers the weathering finish in detail.
FAQ
How deep should steel landscape edging be installed?
Set the strip so the top sits about 1 inch above the soil, with the bottom buried firmly in a trench. This keeps it stable and gives mowers a clear edge to ride along.
How far apart should stakes go?
Most manufacturers recommend spacing stakes roughly 12 to 18 inches apart. Follow the instructions for your specific product, since spacing varies by strip gauge.
Can steel edging be installed in winter?
Installation is easier when the soil is not frozen or saturated. If the ground is hard, wait for a thaw, since digging a clean trench is difficult in frozen conditions.
Conclusion
Steel landscape edging installation rewards careful planning: mark the line, cut a level trench, and anchor the strips well. Take time with the alignment checks and the backfill, because those steps decide whether the border still looks sharp next season. With a straight run in place, the rest of your bed maintenance gets much simpler.
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About Lauren Holland
Lauren Holland is part of our editorial team and reviews and edits our lawn edging & trimming guides, checking product details against manufacturer specifications and owner feedback.
