To fit garden edging, mark the line, dig a trench, set the edging square and level, stake it, then backfill and compact.
Neat borders make mowing easier, stop soil creep, and give beds a crisp outline. This guide shows how to fit garden edging with clear steps, tool picks, and layout tips that work for metal, plastic, brick, and stone. You’ll see what to do before you dig, the order of tasks, and the small adjustments that keep a border straight and stable for years.
How To Fit Garden Edging: Step-By-Step
The workflow stays the same across materials. Mark the line, trench, set, fix, then backfill. The details—depth, base, and stake spacing—change by material. Follow the sequence below and adjust the depth/base to match your edging type.
Edging Types, Best Uses, And Typical Depth
| Material | Best Use | Typical Set Depth |
|---|---|---|
| Steel/Aluminum Strip | Long, smooth curves; slim modern line | 10–20 mm below soil top with top bead just proud |
| Recycled Plastic Strip | Budget long runs; light curves | Flush to soil top; trench 75–100 mm deep |
| Brick Soldier Course | Formal beds and paths | Half brick below grade on 25–40 mm sand bed |
| Stone Setts/Cobbles | Drive edges; rustic beds | 50–80 mm embed on compacted base |
| Paver Restraint (plastic L) | Holding paver patios/paths | Anchors at grade; spikes 300–400 mm apart |
| Wood (Sleepers) | Raised edges; terraces | Half thickness below grade; rebar pins |
| Concrete Curb | High-traffic, mower wheel stop | Below frost line where needed; on compacted base |
Plan The Line And Check For Services
Lay out the border with string lines and marking paint. Long runs need two string lines: one for the face and one for the back, so the trench stays uniform. Before you trench, contact your local utility locate service to mark buried lines. In the U.S., use 811 before you dig. In the U.K., follow the safe-dig steps in HSE guide HSG47 or your local equivalent.
Cut A Consistent Trench
Slice the sod with a half-moon edger or spade. For strip edging, trench depth is usually only as deep as the vertical web with a little clearance so the top bead sits just at or slightly above the soil line. For bricks or stone, dig deeper to allow a compacted sub-base and a thin sand bed so each unit sits stable and level.
Set The Base For Unit Edging
For bricks, stone, or concrete units, spread 50–75 mm of compactable base (type 1/MOT or crushed gravel), tamp, then add a 25–40 mm sand layer. Screed the sand to a uniform height. This gives you a forgiving seat that lets you tweak each piece for level and line.
Place, Check Line, And Level
Start at the most seen spot, such as a patio corner or gate view. Place the edging or the first few bricks. Check the line with your string, then check level across and along the run. Step back every 2–3 meters and sight along the top to catch any bumps or dips early.
Fix The Edging In Place
Metal and plastic strips use stakes or spike holes. A common pattern is a stake every 750 mm to 1 m, with extra stakes at curves and joints; many steel systems specify around 750 mm (30 in) on-center. Drive stakes just below the top bead so they vanish once you backfill. Bricks or stone lock in with haunching mortar on the outboard side or with a hidden paver restraint fixed with spikes.
Backfill, Tamp, And Finish
Backfill both sides, rake smooth, and tamp lightly so the edging doesn’t shift. Where lawn meets edging, cut the grass edge clean. Water the disturbed soil so it settles, then top up any low spots the next day. Run the mower wheel on the hardscape side or on the top bead if your edging is designed for that.
Fitting Garden Edging The Right Way: Tools And Prep
Good prep speeds the job and keeps lines true. Here’s a compact kit that covers most installs:
- Half-moon edger, square spade, trenching shovel
- String line, wooden pegs, marking paint
- Hand tamper or plate compactor for unit edging
- Rubber mallet, lump hammer, cold chisel (for bricks/stone)
- Hacksaw or angle grinder with metal/plastic blade for strip cuts
- Drill/driver, spikes/stakes, joint sleeves or connectors
- Wheelbarrow, rake, stiff brush
- Safety kit: gloves, boots, eye protection
Set Curves And Corners Cleanly
For gentle curves, bend metal or plastic strips by hand in small steps along the line. For tight curves, make a series of shallow relief cuts on the hidden flange. With bricks or stone, shorten the unit spacing on the inside of the curve or use cut wedges so the face stays smooth.
Keep Lawn Edges Crisp
Where turf meets beds, a subtle drop at the bed side helps stop grass runners. Leave the top of a steel or plastic bead just proud so the mower wheel rides it. If you’re cutting a new lawn edge, see guidance on sharp, neat edges from the Royal Horticultural Society, which shows tidy lawn margins and reshaping tips you can copy for beds and borders.
How To Fit Garden Edging On Different Surfaces
Soils, slopes, and traffic change the setup. Tweak depth, base, and fixing to match the site.
Soft Soil Or Sandy Beds
Widen the trench by 50–75 mm and add a thicker compacted base for bricks/stone. For strip edging, add more stakes and shorten spacing along soft spots. If the top sinks after rain, lift that segment, add base, and reset.
Clay Soil
Clay moves with wet-dry cycles. Dig a touch deeper and use a free-draining base layer before the sand bed. Pitch the bed side 3–5 mm lower than the lawn side so water sheds into the border, not onto the grass.
Slopes
Step the edging up or down in short rises rather than forcing a diagonal. Keep each step level, then bridge to the next with a neat vertical joint or a cut unit. On steep runs, increase stake count and place stakes just below each step.
Driveway Edges
Use stone, concrete, or heavy steel. Build on a well-compacted sub-base and lock the outboard side with haunching mortar or a paver restraint so vehicle loads don’t push the line outward.
Safety, Layout Rules, And Setup Details
Edging jobs are shallow, but they still need a quick safety pass and a few set-and-check habits that save rework.
Call Before You Dig
Underground lines can sit near garden edges. In the U.S., submit a ticket with the national service at 811; local teams mark public utilities with paint and flags. In the U.K., follow safe-dig steps in HSE HSG47 or your region’s service maps. Private lines from the house to sheds or lights may not be marked, so probe and dig by hand near suspected routes.
Stake Spacing For Strip Edging
Good rule: closer at curves and joints, wider on straight runs. Many steel systems use about 750 mm (30 in) spacing with extra stakes at tight bends. Keep stakes just below the top bead so they vanish after backfill.
Depth And Reveal
For strip edging, set the top just proud to guide the mower wheel and to block mulch wash. For bricks or stone, aim for a flush top that won’t snag a mower. Keep reveals consistent by using a short story stick marked with your target height and check every meter.
Joints And Transitions
Use factory joiners or sleeves on metal and plastic so the face stays smooth. Where strip meets a unit edge, hide the change at a corner or path crossing. With bricks, stagger joints and tap each unit snug with a mallet before bedding sets.
Need a quick refresher on lawn-edge technique? The RHS lawn edge guide shows the cut sequence and neat finishes. If you’re trenching in the U.S., the national call-811 service explains how markings work and how to file a ticket.
Common Mistakes And Fast Fixes
| Mistake | What You’ll See | Fix |
|---|---|---|
| Skipping Utility Marks | Risk near gas, power, or comms | Book a locate; hand-dig near marks |
| Shallow Trench | Edging lifts or wanders | Re-cut to full depth; add base |
| Few Stakes On Curves | Waves or flat spots | Add stakes mid-curve and at joints |
| No Base Under Units | Wobble and uneven tops | Add compacted base and sand bed |
| Proud Joints | Bumps in the line | Feather with a grinder or reset |
| Poor Backfill | Edges shift after rain | Top up, tamp, and re-check reveal |
| No Expansion Gap (Metal) | Top bead kinks in heat | Leave tiny gaps per maker’s spec |
Material-By-Material Tips
Steel Or Aluminum Strip
Pre-bend curves on a flat surface. Join with sleeves and drive stakes tight to joints. Aim for about 750 mm stake spacing on straights, half that on tight curves. Snap chalk lines where turf hides your string, then slide the bead up or down a few millimeters to fine-tune the reveal.
Recycled Plastic Strip
Uncoil and warm in the sun so it relaxes. Use more spikes at curves and at the end of each length. Keep the top bead level with the lawn to avoid a tripping edge along paths.
Bricks (Soldier Course)
Set a straight reference with a screed board. Butter the outboard side with a thin haunch once the line is locked. Brush kiln-dried sand into the joints when dry weather is due, then mist lightly to settle.
Stone Setts
Sort stones by size and color so the face reads even. Work in small batches, tapping each piece into the sand bed with a rubber mallet. A hidden plastic paver restraint on the soil side helps hold the row against garden loads.
Wood Sleepers
Pre-drill, then pin with rebar through clearance holes. Bed the timber on compacted gravel so it stays off wet clay. Stagger joints and treat cut ends with a suitable end-grain sealer.
Layout Checks That Keep Lines Straight
Make small checks often. A few quick habits keep the run true:
- Re-sight the top every 2–3 m and at each joint.
- Use a short level plus a 2 m straightedge for long flats.
- On curves, hold a fixed radius with a pegged tape or a marked batten.
- After rain, re-check reveal and top up backfill where it slumped.
Care And Upkeep
Once set, edging needs little work. Keep mulch a fingertip below the top so soil doesn’t wash over. With metal or plastic, brush along the bead a few times each season to stop soil bridging. For bricks or stone, top up jointing sand as needed and trim any turf that leans into the line.
Project Planner: Time, Cost, And Waste
Time
A 10 m straight run of strip edging is a half-day solo job if the trench is light. Add time for curves, roots, or heavy soil. Bricks or stone take longer due to base work and setting each unit.
Cost
Strip edging costs scale with metal vs plastic and stake count. Bricks and stone add base and sand plus cutting discs. Buy 10–15% extra strip length or units to cover cuts and small layout changes.
Waste
Keep offcuts for short returns and small curves. Clean bricks or stone from pallets last so you can return unopened stacks if your supplier allows it.
Your First Run, Done Right
Pick the material that suits the site, lay out a clean line, and follow the trench-set-fix-backfill sequence. If this is your first time and you want a sure win, start with a straight steel or plastic strip beside a path. Once you’ve done one neat run, the next curve or brick edge will feel easy.
You’ve just seen how to fit garden edging from start to finish. Use the same order on the next bed, adjust stake spacing for curves, and keep that top line steady and level.