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Lawn mowing frequency in the UK depends on the season, weather conditions, and grass growth rate. Most gardeners and grounds managers need to adjust their mowing schedule throughout the year as temperature and moisture levels change. Understanding when and how often to cut your lawn helps maintain a healthy, attractive sward while reducing unnecessary work during dormant periods.
First cut of spring
The first cut of the year typically happens in mid-March once grass reaches 5–8cm tall and the soil is dry enough to work on. Many gardeners are tempted to mow after the first spell of mild weather, but doing so on wet ground is counterproductive: mowing compacts the soil, suffocating roots, and the mower tears rather than cuts wet grass. If your area has experienced heavy rain or your soil is clay-heavy, wait for a few dry days to pass before starting the season. This single delayed cut in March makes little practical difference to lawn health by summer, but preventing soil compaction and damage to the grass plant pays dividends over the season.
Set the first cut higher than summer height—the RHS recommends around 40mm (1½ inches)—and follow the one-third rule throughout the season: never cut away more than a third of the grass leaf in a single pass.
Spring mowing: March to May
Through March and April, grass begins active growth as temperatures rise. Spring is one of the two peak growing periods in the UK lawn calendar, with the other being autumn. During this time, grass growth depends on rainfall and warmth; in a wet spring, lawns may need mowing every week, but in a dry spring, once every two weeks is often sufficient. Continue setting the mower to 40mm to encourage healthy growth and discourage weeds.
Summer mowing: June to August
June and July see the fastest grass growth of the year as temperatures peak. During this period, mowing one or even two times a week may be necessary to keep a conventional domestic lawn neat. Reduce the cutting height to 13–25mm (½–1 inch) for ordinary family lawns; fine ornamental lawns can go down to 6–13mm.
In high summer, particularly during July and August, monitor for drought stress. If the grass turns grey-blue or growth visibly slows, reduce mowing frequency to every 10–14 days or pause altogether if conditions are very dry. Excessively close mowing in heat weakens grass and increases susceptibility to both drought and weed invasion. Longer grass shades the soil, retaining moisture and helping plants survive dry spells.
Autumn mowing: September to November
Autumn is the single most important season for lawn improvement in the UK. As temperatures cool and autumn rain returns, grass enters a second vigorous growth phase, often more intense than spring. September in particular offers ideal conditions—soil still warm from summer, moisture returning, and cooler air encouraging growth—and many lawn problems can be resolved in this month alone. Continue mowing weekly at 40mm through September and October.
By late October or early November, as temperatures drop towards winter, grass growth slows markedly. Give the lawn its final cut of the season in late October or early November, setting the mower slightly lower than usual to help prevent the grass matting under winter weight or snow.
Adapted schedules for different lawn types
Flower-rich meadow lawns designed to support pollinators should be left uncut from March through May to allow early wildflowers to establish. After late May, cut once every four to six weeks until autumn. Long-grass areas and wildlife corridors need just one or two cuts after June.
Commercial grounds and sports turf often follow stricter schedules to maintain playing surfaces to specification: most sports grounds receive one to two cuts weekly throughout the growing season, with cylinder mowers preferred for fine turf and rotary machines used for rougher ground.
Wet weather and ground conditions
Mowing wet grass causes damage that weakens the plant and invites disease. Always wait until the soil has dried sufficiently to walk across without compacting. This may mean delaying a scheduled cut by a week during very wet periods; the delay is far less harmful than compaction and torn grass. Waterlogged soil, frozen ground, or frost conditions should be avoided entirely.
During exceptionally wet winters or springs, such conditions can delay the start of the mowing season by two to three weeks, as councils and contractors have experienced in recent years. Patience in waiting for ground conditions to improve prevents costly soil damage that may take years to recover.
Key points
- Start the first cut in mid-March on dry ground, set the mower to 40mm, and follow the one-third rule throughout the season
- Spring and autumn are peak growth periods; plan for weekly mowing from March to May and again in September and October
- Summer cutting heights are 13–25mm for domestic lawns; reduce mowing frequency during dry spells or drought
- Never mow wet grass or waterlogged soil; wait for dry conditions to avoid compaction and tearing
- Flower-rich and wildlife lawns follow different schedules, typically cut every four to six weeks rather than weekly