What kind of lawn edging works best with a robot mower?

Smooth, flush concrete or stone edging pavers — set level with the turf so a wheel can roll straight over them. Robomow's own installation guidance recommends concrete edging stones or smooth 'dovetail' pavers specifically because the mower can drive across them without catching a lip, and specifies a minimum width of about 10 cm when there's a gap on the other side, or 20 cm or more when the edging sits flush against a wall. Rough-cut stone, by contrast, creates a bumpy ride that can cause the mower to bounce or cut unevenly.

Can I use regular raised plastic landscape edging with a robot mower?

Not along any path your mower crosses. The raised no-dig plastic or rubber edging sold at most hardware stores — the common 1.5-to-2-inch-tall kits like Dimex's EasyFlex line — sits above grade by design, so a robot mower's wheel either trips on the lip or the mower backs off before reaching it, leaving the same uncut strip you were trying to eliminate. It still works fine for borders the mower's boundary is set well inside of, just not as a drive-over edge.

Does metal lawn edging interfere with a robot mower?

Only for boundary-wire models, and only if it's generic edging rather than a wire-free system. Robomow's own buying guidance for robotic mowers specifically advises against standard metal edging because it can distort the low-voltage magnetic signal the mower's buried boundary wire relies on — wire-mower troubleshooting guides generally recommend keeping the buried wire at least 10-40 cm (roughly 4-16 inches) away from any metal edging, rebar, or drainage grate. Wire-free mowers that navigate by RTK-GPS or LiDAR/vision (Segway Navimow, Mammotion Luba, Dreame) don't read a wire signal at all, so metal edging near the lawn doesn't cause the same interference — it still needs to be flush, not raised, for the wheel to cross it cleanly.

Do I even need edging if my mower uses RTK-GPS or LiDAR instead of a wire?

You don't need it for the mower to know where to stop — that boundary lives in the app, not in a physical object. But a flush edge still solves two real problems: it stops the mower's wheels from rutting into soft mulch or flower-bed soil if the virtual boundary ever drifts a few inches, and it gives you (not the mower) a clean, visible line to redraw the boundary against when you remap the lawn. Think of it as a prop for the human doing the install, not a sensor input for the robot.

How wide does the edging need to be for my specific mower?

Per Robomow's guidance, the rule of thumb is roughly half the distance between the mower's outer chassis width and its cutting-disc diameter, doubled — in practice, that's why most manufacturers land on the same 10-24 cm (4-9.5 inch) range regardless of brand. A compact mower like a Segway Navimow i105N needs less clearance than a wide-deck AWD flagship like a Mammotion Luba 3, so check your specific model's chassis width before buying a narrow paver that might still clip the blade housing.

Best Lawn Edging for Robot Mower Lawns (2026): What Actually Works

Quick Answer: Most “best landscape edging” buying guides default to raised no-dig plastic or premium steel edging — both are wrong choices for a lawn a robot mower crosses. Per Robomow’s own installation guidance, the right pick is smooth, flush concrete edging stones (about 10-24 cm wide, level with the turf) so a wheel rolls straight over without catching a lip; raised plastic edging just moves the uncut strip instead of removing it, and generic metal edging can distort a boundary-wire mower’s magnetic signal unless it’s kept 10-40 cm from the buried wire. We compare three real products below for both wire-free (RTK/LiDAR) and boundary-wire mowers.

If you’ve read our robot lawn mower installation guide, you already know the boundary step — wire or RTK/LiDAR — is the hard part of setup. What almost nobody covers is the physical edge between lawn and flower bed, which matters for a completely different reason: generic landscaping advice optimizes for how the border looks, while a robot-mower lawn needs the border to be driveable. Those two goals often conflict, and the edging most homeowners buy by default — raised plastic “no-dig” kits — fails the driveable test outright.

The three approaches compared

Edging type	Drive-over ready?	Wire-mower safe?	Typical price
Flush concrete/stone pavers	Yes — flush by design	Yes, no metal	~$2-3/piece (12 in)
Raised no-dig plastic	No — 1.5-2 in lip	Yes, but still won't be mowed over	~$45-52/100 ft kit
Steel/aluminum edging	Yes, if installed flush	Only if ≥10-40 cm from buried wire	~$30-60/50-100 ft

1. Flush Concrete Edging Pavers — Best for Any Mower Type

Smooth Concrete/Stone Edging Pavers (e.g. Pavestone-style straight edgers)

~$2-3 per 12-in piece · set flush with turf · works with wire, RTK-GPS, and LiDAR mowers alike

Smooth-faced concrete or stone pavers, laid level with the grass, are exactly what Robomow's own install documentation recommends — the mower's wheel rolls straight across instead of catching a lip or bouncing on a rough edge.
No metal content, so there's zero boundary-wire interference risk to worry about — a non-issue for RTK/LiDAR mowers too, but one less variable if you ever switch brands later.
Because each paver is a rigid, fixed object, it also doubles as a physical reference line for re-walking a wire-free mower's virtual boundary after a remap, even though the mower itself doesn't "see" it as a sensor cue.

Check concrete edging pavers on Amazon →

Picking up pavers for the same project you’re installing your mower’s charging station for? Try Amazon Prime free for 30 days — one Prime shipment gets both the edging and any install hardware to your door in two days instead of a trip to the store.

The tradeoff is labor: pavers need to be bedded level, which means a shallow trench and some sand or gravel base — more setup time than a no-dig plastic kit. For a lawn a robot mower actually crosses, that upfront work is the whole point; a kit that installs in ten minutes but sits an inch proud of the grass just relocates the problem.

2. Raised No-Dig Plastic Edging — Fine for Beds the Mower Never Touches

No-Dig Plastic/Resin Landscape Edging (e.g. Dimex EasyFlex-style kits)

~$45-52 per 100-ft kit · 1.5-2 in raised profile · anchoring spikes included

This is the edging most homeowners already own or would buy by default — fast no-dig installation with anchoring spikes, and it holds mulch or rock in a bed reliably.
The raised 1.5-2 inch lip that makes it good at retaining mulch is the exact feature that makes it a poor drive-over surface: a robot mower's wheel either bumps against it or the mower's own obstacle sensing stops the mower short, leaving an uncut strip right where the edging sits.
Still a reasonable buy for beds set back from the mower's boundary — just don't expect the mower to cross it cleanly if the boundary runs along its top edge.

Check no-dig edging kits on Amazon →

If you already own a kit like this, you don’t need to rip it out — just set your mower’s boundary (wire or virtual) a few inches inside the edging’s base rather than on top of it, and keep the string trimmer from our edge-cutting trimmer guide handy for the strip the mower will still miss.

3. Steel/Aluminum Edging — Best Finished Look, Wire-Mower Caution

Flexible Steel or Aluminum Landscape Edging

~$30-60 per 50-100 ft roll · flush or near-flush when installed per spec · rust-free aluminum option available

Metal edging holds a straight, architectural line better than plastic (which warps in sun over a season or two), and installed with the top no more than about half an inch above grade, it's genuinely drive-over capable.
For a wire-free RTK-GPS or LiDAR/vision mower (Segway Navimow, Mammotion Luba, Dreame — see our [wire-free mower roundup](/guides/robot-lawn-mower-without-perimeter-wire/)), there's no signal to interfere with, so this is simply a cosmetic/durability choice.
For a boundary-wire mower, generic metal edging is the one material Robomow's own guidance explicitly flags — the buried wire's low-voltage magnetic signal can be distorted by nearby metal, so wire-mower troubleshooting documentation generally calls for keeping the wire at least 10-40 cm (4-16 inches) clear of any metal edging, rebar, or drainage grate.

Check steel/aluminum edging on Amazon →

If you’re installing a boundary-wire model like a Husqvarna Automower or Worx Landroid (see our install guide for wire-laying basics), route the wire’s path first and keep it well clear of any metal edging run — or just default to the concrete-paver option above and skip the clearance math entirely.

By the numbers

10-24 cm (4-9.5 in): the edging-width range Robomow recommends across its mower lineup, depending on the gap between stones and whether the edging sits against a wall — per Robomow’s own installation guidance.
10-40 cm (4-16 in): how far a boundary wire should stay from metal edging, rebar, or drainage grates to avoid signal distortion on wire-guided mowers, per wire-mower troubleshooting documentation.
1.5-2 in: the typical raised profile on a no-dig plastic edging kit — the exact height that turns “edging” into an obstacle for a mower’s wheel instead of a surface it can cross.

The bottom line

Skip the “best-looking” edging and buy for driveability instead: flush concrete or stone pavers are the one option that works cleanly across every mower type, wire or wire-free, with zero interference risk. Already own raised no-dig plastic edging? Keep it for beds set back from the mower’s path and pair it with a string trimmer for the strip it won’t let the mower reach. Want the cleanest finished look and run a wire-free mower, or are willing to mind the clearance math on a wire model? Steel or aluminum edging, installed flush, is the premium pick. For the mower itself, start with our best robot lawn mower pillar, and for the boundary-wire-vs-RTK decision that determines which edging rules apply to you, see our wire-free robot mower roundup. See current lawn edging listings on Amazon →