Edging tools fall into two groups: tools that cut and maintain the edge itself, and tools used to install edging materials. Which you need depends on the length of your edges, whether they run along hard surfaces like driveways or soft beds, and how often you trim. This guide compares the main tools and summarises the safety rules that manufacturers print in their operator manuals. It is research-based; check your own tool’s manual, which always takes priority.
Tools for cutting and maintaining edges
| Tool | How it works | Best for | Limitations |
|---|---|---|---|
| Half-moon edger (edging iron) | Semi-circular blade pushed down with your foot | Cutting and re-cutting soft edges along beds | Slow on long runs; physical effort |
| Flat-backed spade | Straight blade for vertical cuts | Cutting new edges and lifting turf strips | Harder to keep a smooth curve |
| Long-handled edging shears | Horizontal-handled shears that cut vertically | Trimming grass overhanging the edge after mowing | Slow for very long edges |
| Rotary edger (manual) | Star-shaped wheel rolled along a hard edge | Driveways and paths | Less effective on soft or overgrown edges |
| Power edger (electric, battery or gas) | Vertical spinning blade with a depth adjustment | Long driveway and sidewalk edges; crisp, deep lines | Noise; thrown debris; needs careful guiding |
| String trimmer (turned vertical) | Spinning nylon line | Light edging and trimming around obstacles | Less crisp than a blade; throws debris |
The Royal Horticultural Society recommends using edging shears after each mow and redefining edges with a half-moon tool about once a year, avoiding waterlogged soil, which compacts when worked. See manual edgers.
Power edgers
A power edger runs a vertical blade along a hard edge, cutting a clean channel between lawn and pavement. Points to compare:
- Power source: battery models are quieter and need no fuel; corded electric models are light but limited by the cord; gas models suit large properties but are louder and need fuel and maintenance.
- Depth adjustment: lets you set how deep the blade cuts.
- Curb wheel: a drop wheel that rides on the road or path edge for straighter cuts.
- Blade guard and deflector: manuals warn not to remove or modify them.
See power edgers.
Edging with a string trimmer
Many string trimmers can rotate their head to cut vertically, or are simply tilted on their side. They are versatile but produce a rougher edge than a blade and throw debris sideways. Keep the guard in place, use the line type and diameter the manual specifies and work so debris is thrown away from you, people, windows and cars. See edging with string trimmers.
Safety rules from operator manuals
Manuals for edgers and trimmers repeat the same core rules. For example, a Lawnmaster battery edger manual and a Husqvarna operator’s manual include:
- Bystanders: keep all people, especially children, and pets at least 15 m (50 ft) from the work area. Some manuals specify more; follow yours.
- Eye protection at all times, plus hearing protection, sturdy non-slip footwear and gloves as conditions require.
- Clear the area of wires, sticks, stones and debris that the blade can throw.
- Keep hands and feet away from the blade and cutting area.
- Stop before servicing: turn the tool off, remove the battery and let moving parts stop before clearing blockages, cleaning or changing accessories.
- No wet conditions for electric and battery tools.
- Inspect before use: check blades, bolts and the cutter assembly for damage.
Avoid loose clothing, shorts and bare feet, and never operate tools when tired or impaired.
Tools for installing edging
| Tool | Use |
|---|---|
| String line and stakes | Marking straight edges |
| Garden hose or rope | Laying out curves |
| Marking paint | Transferring the line to the ground |
| Half-moon edger or spade | Cutting the trench |
| Trenching shovel | Narrow trenches for strip edging |
| Rubber mallet | Setting edging, stakes, bricks and pavers without damage |
| Level and straightedge | Keeping brick, paver and stone edging even |
| Hand tamper or plate compactor | Compacting the base under bricks and pavers |
| Metal shears or hacksaw | Cutting strip edging to length (wear gloves; cut edges are sharp) |
Before digging any trench, contact 811 a few business days ahead to have buried utilities marked; the service is free. See installation tools and the step-by-step installation guide.
Choosing tools for your garden
| Garden | Suggested kit |
|---|---|
| Small garden with bed edges | Half-moon edger and long-handled shears |
| Long driveway or sidewalk edges | Power edger (battery or gas) with depth adjustment |
| Mixed edges and obstacles | String trimmer that rotates for edging, plus shears for detail |
| Installing new edging | String line, spade, mallet, level; tamper for brick or pavers |
Tool care
- Keep blades and shears sharp; the RHS notes sharp shears give a cleaner cut.
- Clean soil and grass off after use and dry tools to prevent rust.
- Store batteries as the manual directs, away from heat.
- Replace worn or damaged blades; some manuals require replacing parts in sets to keep the cutter balanced.
Materials to pair with your tools are compared in lawn edging materials. All tool guides are under Edging Tools.
Frequently asked questions
Is a power edger worth it?
It is most useful if you have long edges along driveways and sidewalks. For bed edges in a small garden, a half-moon edger and long-handled shears are quieter, cheaper and give more control.
Can a string trimmer replace an edger?
For light edging, yes, especially trimmers designed to rotate for vertical cutting. A blade edger cuts a cleaner, deeper channel along hard edges.
Battery or gas?
Battery tools are quieter, need no fuel and suit most home gardens. Gas tools offer longer run times for large properties but need fuel handling and more maintenance.
