Most mowers are suitable for use on gentle slopes, but heavy machines are awkward to control on steeper gradients.

Hand or electric machines are suitable, as are some petrol-engined machines. The petrol engine adds to the weight, of course. Look for 2-stroke petrol-engined mowers. If the mower has a 4-stroke engine, the engine oil may not be able to reach the parts it should when used on a slope, although some of Honda's 4-stroke engines (fitted to Allen and Flymo hovers) are designed for slopes.

Where lawns contain obstructions such as flower beds, trees, bird tables or sundials, a small mower is easier to use. Mains electric ones are a nuisance because the flex either becomes caught up or damages plants, so consider another type of machine.