Manual lawn edgers give you a quiet, precise way to cut crisp borders without fuel or cords. The Royal Horticultural Society (RHS) recommends two main types: half-moon edging tools for cutting new edges and redefining old ones, and edging shears for regular trimming. This guide walks through how to use both, when to reach for each tool, and what simple habits keep a hand-edged border looking neat all season.
Tools for creating a new edge
When you are putting in a fresh border or reshaping a lawn, the RHS’s guide to creating a lawn edge lists a few simple items. For marking straight edges, use a string line tied between two canes or pegs. For curved edges, a garden hose, rope or string works well because it bends into smooth sweeps. The cutting tool can be a half-moon edger or a flat-backed spade. A separate spade is also handy for lifting and removing unwanted turf once the cut is made.
The half-moon edger has a flat top you can stand on to push the blade fully into the ground. If you use a flat-backed spade instead, the RHS suggests marking a depth of 7.5 cm (3 in) on the blade with tape so every cut goes to the same level. Both tools create the vertical face that separates lawn from bed. For more on choosing a manual edger, see our Manual Edgers category.
Tools for maintaining edges
Once an edge exists, the RHS’s maintenance advice points to two tools: a half-moon edging tool for redefining the line, and edging shears for trimming grass that flops over the cut. The half-moon tool cuts away thin slivers of turf that have crept into the border. Edging shears work like scissors held vertically; you keep the lower blade steady and move the upper blade to snip overhanging blades. The RHS notes that long-handled or telescopic shears are useful for tall gardeners who want to work without bending. Sharp shears give a cleaner cut and make the task easier, so the RHS recommends keeping them sharp. Browse our Edging Tools section for a wider look at what is available.
How to create a lawn edge with a manual edger
The RHS breaks the process into clear steps. First, decide on the shape: straight edges give a formal look, while broad, sweeping curves are easier to maintain than intricate shapes. Mark the line with string or a hose, then view it from different angles, including from an upstairs window if you can, and adjust until you are happy.
Start cutting at one end. Insert the blade of the half-moon edger downward along the line, standing on the flat top to drive it in fully. If you are using a flat-backed spade, push it to the taped 7.5 cm (3 in) mark. Take small steps and make cuts that slightly overlap so you get one continuous slit. Once the line is cut, go back and pull up narrow strips of grass by hand. For larger pieces, slide a spade underneath to lift the turf. Walk the line from both ends to check it is neat and even, and cut out any missed bits. The RHS says you can compost the removed grass or stack it separately to rot down into soil.
Working on slightly wet soil can make cutting easier, but the RHS cautions against working on frozen or very wet ground. If the soil is only a little damp, placing a wooden board underfoot reduces compaction. This is especially helpful when redefining edges during winter months, a job the RHS says is often good to do in the quieter season, provided the soil is not saturated.
How to maintain edges with shears
Regular trimming keeps a hand-cut edge looking sharp without having to recut it constantly. The RHS recommends using edging shears after each mowing session. When grass is growing strongly, that may be as often as once a week. Hold the shears upright with the blades beside the lawn edge. Keep the handle attached to the lower blade steady and move the upper-blade handle to cut overhanging grass. Take small sideways steps and overlap your cuts slightly for a crisp finish. After trimming, check for any missed tufts and snip them.
Before you trim, you may need to redefine the edge with a half-moon tool. The RHS advises inserting the blade downward all around the lawn to slice away slivers of grass that have grown into the border. Aim for a drop of about 7.5 cm (3 in) from the lawn surface to the bed; this helps keep plants off the grass and grass out of the border. Use a spade to remove excess soil, or draw soil away from the edge with a hoe. Rake up the cut grass and compost it, or flick short clippings into the border with a hoe to rot down. For more on keeping borders tidy, visit our Lawn Maintenance page.
When to redefine edges
The RHS states that edges can be redefined with a half-moon edging tool at any time of year, and doing it annually makes trimming easier. Many gardeners tackle this in winter when the lawn is not growing much, but if your soil stays wet over winter, wait until it dries out to avoid compacting the ground and damaging the turf. When the soil is only slightly wet, working off a wooden board reduces compaction, as mentioned earlier. During mild winter spells, grass may still grow, and the RHS notes that edges may benefit from an occasional trim.
Rhonda Ferree, a horticulture educator with University of Illinois Extension, points out that hand-edged beds need touching up once or twice a year. She describes the look of a hand-edged bed as particularly attractive, but acknowledges it is hard work. Her advice aligns with the RHS: a sharp spade or half-moon tool makes the recut cleaner and faster.
Hand-edging dimensions and material choices
According to the Illinois Extension, a hand-edged trench about 4 inches deep and 4 inches wide can easily contain bluegrass. To create it, start by using a sharp spade to cut an edge, then remove the soil and grass to form a small cliff. You can leave the edge as a simple hand-cut trench, or fill the space with a solid material. Ferree notes that metal edging, including steel and aluminum, is the longest lasting, while brick, stone, and concrete make useful and decorative borders. Plastic edging is inexpensive but has poor durability and can be hard to keep in the ground. If you decide to install a permanent edging material, our Lawn Edging Types guide compares the options.
No matter which approach you choose, the hand-cutting step is the same: a clean vertical cut with a manual edger sets the foundation. The Illinois Extension emphasizes that the material should be long-lasting, strong, and complement the landscape. For a purely hand-edged look, simply maintain that 4-inch trench with a half-moon tool and shears.
Safety basics for manual edging
Manual edging tools are straightforward, but a few precautions make the work safer. Wear sturdy shoes that protect your feet when you step on a half-moon edger. Gloves help prevent blisters and give a better grip on handles. When using edging shears, keep your free hand well away from the blades, and consider wearing safety glasses to shield your eyes from flying soil or grass bits. Keep shears sharp; a dull blade requires more force and is more likely to slip. Before you dig any new edge or trench, call 811 a few business days ahead to have underground utilities marked. This free service helps you avoid hitting buried lines. Always follow the safety instructions in your own tool’s manual, as different models may have specific warnings.
Frequently asked questions
How deep should a hand-edged trench be?
The University of Illinois Extension recommends a trench about 4 inches deep and 4 inches wide to contain lawn grasses such as bluegrass. The RHS suggests a drop of roughly 7.5 cm (3 in) from lawn to border when maintaining edges, which also helps keep mulch in place and grass out of beds.
Can I use a flat-backed spade instead of a half-moon edger?
Yes. The RHS says a flat-backed spade works for cutting edges if you mark a depth of 7.5 cm (3 in) on the blade with tape and insert it to that line. A half-moon edger is designed for the job and has a flat top you can stand on, but a spade is a practical alternative.
How often should I trim edges with shears?
The RHS advises trimming with edging shears after each time you mow the lawn. During peak growth, that may be as often as once a week. Regular light trimming keeps the job quick and prevents grass from creeping into borders.
For step-by-step advice on using half-moon edgers, shears, and other hand tools, explore our Manual Edgers category. You can also see how manual tools fit into a full toolkit in our Lawn Edging Tools guide.
