How to Choose a Lawn Mower for Your Yard

A mower that suits your neighbour's flat, rectangular lawn may be a poor fit for a sloping plot with narrow gates and a patchwork of grass, paths and beds. The right choice depends less on the most powerful engine on the shelf and more on three practical questions: how large is the area you actually mow, how steep or awkward is it, and how much time and storage do you have for upkeep? Answer those first, and most of the options narrow themselves down quickly.

Start by measuring, or at least pacing out, the lawn itself rather than the whole garden. A small front lawn of 50 square metres needs a very different machine from a 500-square-metre back lawn. Cutting width matters here. A narrow deck of 30 to 35 centimetres suits small lawns and tight turns around trees and beds. A width of 40 to 46 centimetres is a common guideline for a medium family lawn, while widths above 50 centimetres save noticeable time on large, open areas but are harder to push through a standard garden gate and heavier to lift into a shed. If your only access is a gate under 80 centimetres wide, check the mower's overall width, including wheels and handles, before you buy.

Rotary, reel and hover mowers

Most homeowners choose between a rotary mower, a reel mower and, less often, a hover mower. A rotary mower uses a single horizontal blade spinning at speed. It copes well with longer grass, uneven ground and the occasional twig, and it is the most forgiving choice for a mixed lawn that is not mowed every week. A reel mower, with a cylinder of blades cutting against a fixed blade, gives a clean, scissor-like cut and works beautifully on a level, regularly mown lawn, but it struggles with long, damp or bumpy grass and needs more frequent sharpening to stay effective.

A hover mower floats on a cushion of air and is light to move sideways, which can help on steep banks where wheels tend to slip. It is less suited to very large lawns because it usually has a smaller cutting width and collects clippings less effectively. For most gardens, the practical decision is between a rotary mower for versatility and a reel mower for a fine, formal lawn that is cut often and kept fairly level.

Power source is the next fork in the road. Petrol mowers typically offer the longest uninterrupted run time and suit large lawns, thick grass and slopes. Battery mowers are quieter, lighter, need less routine engine maintenance and start at the push of a button, which many people prefer for a small to medium lawn. Corded electric mowers are usually the lowest-cost option and work well for a small lawn close to a power point, but the cable itself becomes the limitation: you must plan your mowing path to avoid running over it, and it is awkward around trees and beds. For a fuller comparison of running costs and upkeep, see Battery vs Petrol Garden Tools: An Honest Comparison.

What size, weight and features actually matter

Weight matters more than most buyers expect. A mower you can push comfortably up a slope on a warm day is very different from one you can push after a wet week when the grass is heavy. Self-propelled models help on slopes and larger lawns, but they add weight, cost and parts to maintain. If your lawn is mostly flat and under about 300 square metres, a push mower is typically sufficient and simpler to store and service.

Look closely at the practical features rather than the headline power figure. Height adjustment should be easy to change, ideally with a single lever rather than adjusting each wheel separately, because you will change height through the season. A grass box of 40 to 60 litres suits a medium lawn; a smaller box means frequent emptying, while a very large box adds weight when full. A mulching plug, which returns fine clippings to the lawn, can save time if you mow little and often, but it works best on dry grass cut by no more than a third of its height at a time. Side discharge suits longer grass on a larger, less formal lawn.

Also check how the handle folds, whether the mower stands upright safely, and whether the wheels feel sturdy. For cutting technique, How to Mow a Lawn Properly: Height, Pattern and Timing covers height, frequency and pattern.

Matching the mower to slope, access and storage

Slope changes the decision more than lawn size alone. On a gentle slope, a light push mower with good grip is usually fine, and mowing across the slope rather than straight up and down gives better control. On a steep bank, a heavy petrol mower can be hard to hold and tiring to turn at the top and bottom of each pass. In that case a lighter battery or hover mower, or a decision to plant the steepest section with ground cover instead of grass, may be safer and more practical. Never mow a steep slope when the grass is wet, and wear sturdy, closed footwear with good grip.

Access is equally practical. Measure every gate, path and shed doorway the mower must pass through, and remember that handles often fold but wheels do not. If you must carry it up steps, a model under about 25 kilograms is a common guideline for comfortable lifting by one person. Store it dry: a mower left outside under a thin cover will rust and become hard to start.

Budget is best thought of as a range. A basic corded or small push mower may cost in the low hundreds in local currency, a capable battery mower with a spare battery often sits in the middle range, and a large self-propelled petrol mower sits higher still. Spare batteries, blades and servicing add to total cost, so ask about those prices before you commit.

Keeping a new mower in good shape

A mower's working life depends heavily on simple, regular care. After each mow, brush or scrape clippings from the deck and wheels, and let the mower dry before storing it. A clogged deck makes the mower work harder, leaves clumps on the lawn and encourages rust. Check the blade a few times a season: a blunt blade tears grass rather than cutting it, leaving pale, frayed tips that dry out and look untidy. You can learn the basics in How to Sharpen Garden Tools Safely, or ask a local service centre to sharpen or replace the blade if you are unsure.

For petrol mowers, check the oil level before use, clean or replace the air filter at the interval suggested in the manual, and use fresh fuel; old fuel left over winter is a common reason for a mower that refuses to start in spring. For battery mowers, store batteries cool and dry, and avoid leaving them fully flat for months. For any mower, check nuts, bolts and wheels at the start of the season, and keep children and pets clear while the blade is running.

Common mistakes

• Buying the widest, most powerful mower available, then finding it will not fit through the gate or is too heavy on a slope.
• Choosing a reel mower for a rough, infrequently mown lawn, where a rotary mower would cope far better.
• Ignoring the cost of spare batteries, blades and servicing when comparing prices.
• Mowing a steep or wet slope with a heavy machine, rather than choosing a lighter mower or a different planting for that area.
• Leaving clippings caked on the deck and storing the mower damp, which shortens its life more quickly than normal wear.
• Cutting too short in one pass to "save time", which stresses the grass and leaves a thin, weedy lawn.

The best mower is rarely the most expensive or powerful. It is the one that fits your gate, suits your slope, matches the lawn you actually mow, and is light enough to use regularly. Measure the lawn, check access and storage, compare total running costs, and choose the simplest machine that meets those needs well.