How Often to Mow Your Lawn in the UK, Month by Month
A practical month-by-month guide to mowing frequency and cutting height for UK lawns, including dry spells, shade and the one-third rule.
There is no single correct mowing schedule. Grass grows with temperature, light and moisture, so the right frequency changes through the year and between a shady lawn and a sunny one. Learn the principles and you can adjust sensibly rather than following a calendar.
The one-third rule
The most useful guideline is simple: never remove more than about a third of the blade length in one cut. Taking off more shocks the grass, weakens roots and encourages moss and weeds. If your grass is 6cm tall and you want a 3cm finish, cut it in two steps a few days apart rather than all at once.
Month by month
| Period | Frequency | Typical height |
|---|---|---|
| March to April | Every 1 to 2 weeks, once growth starts | 4 to 5cm, first cut high |
| May to June | Weekly | 3 to 4cm |
| July to August | Weekly or fortnightly, depending on rain | 4 to 5cm, higher in drought |
| September to October | Every 1 to 2 weeks, easing off | 4 to 5cm |
| November to February | Rarely, only on mild days if needed | Keep at 5cm or more |
These are guides. A mild, wet spring pushes growth earlier; a baked August slows it right down.
Adjusting for your lawn
Shady lawns
Grass under trees or beside walls grows slowly and thins out if cut too short. Leave it longer, around 5cm, and mow less often.
Hard-wearing family lawns
Lawns that take football and play benefit from a slightly higher cut, which gives resilience and recovers faster.
Fine ornamental lawns
Fine grasses can be cut shorter, around 2 to 3cm, but only if they get plenty of sun and are mown often. This is higher effort and not suitable for most gardens.
Drought and heat
In hot dry spells, raise the cutting height and mow less. Short grass in drought turns brown and struggles to recover. See watering a garden in hot weather for more on summer care.
Good mowing habits
- Mow when the grass is dry. Wet grass clogs the mower and tears rather than cuts.
- Keep blades sharp. Dull blades fray the tips, leaving a brown cast.
- Alternate direction each time to avoid ruts and encourage upright growth.
- Leave short clippings on the lawn in dry conditions as a free feed, and collect them when they are long or wet.
- Start and stop on a hard surface rather than turning on the grass, to avoid scuffing.
- Clear stones and toys before you start.
The first and last cuts of the year
Start in spring with a high cut once the grass is actively growing, usually in March or April. Avoid mowing frosted lawns, as the blades are brittle and the surface is easily damaged. In autumn, keep going while the grass grows, then raise the height for the final cut so the lawn goes into winter with some cover. If you want to renovate, see scarifying a lawn and overseeding.
When it is worth paying for mowing
If your schedule or mobility makes regular mowing hard, a weekly or fortnightly visit from a gardener keeps lawns in step with growth. It is often cost-effective for medium and large lawns; see lawn mowing prices in the UK. On Compito you can search by postcode, compare ID-verified local gardeners, and send a request describing your lawn. See how it works.
Common mistakes
- Cutting too short in an attempt to extend the time between cuts.
- Mowing in wet conditions or under heavy frost.
- Never raising the blades in summer.
- Letting clippings pile up and smother the grass.
- Cutting right to the edge of a hard surface without edging, leaving ragged lines.
Worked example: a family lawn through the year
A 10m by 6m lawn in the Midlands gets its first cut in late March, set high. By May it is weekly. In July a hot dry spell slows growth, so the family raises the blades and cuts fortnightly, leaving clippings. In September growth picks up and weekly cuts resume, then ease to fortnightly in October. A last cut at a higher setting in November tidies leaves and sets the lawn up for winter. Across the year that is roughly 25 to 30 cuts, though the exact number varies with weather and region.
Quick decision table
| Situation | Suggested response |
|---|---|
| Grass over 7 to 8cm after neglect | Cut in stages, a third at a time |
| Wet weather, growth strong | Mow when dry, even if mid-week |
| Heat and drought | Raise the height and mow less |
| Shaded lawn | Higher cut, fewer visits |
| Frost on grass | Do not mow |
| Patchy lawn with bare spots | Higher cut and overseed; see overseeding |
Different mowers, different results
- Cylinder mowers give fine finishes but need regular cutting and a level lawn.
- Rotary mowers cope with longer grass and uneven ground.
- Robotic mowers cut little and often, and need a clear boundary and a charging point.
- Hover mowers suit banks and small lawns, and work best when grass is dry.
Special cases
- Rentals. Check the agreement. Landlords may provide a mower or expect the tenant to supply one.
- Wildlife lawns. Cutting less often, or leaving a margin, helps pollinators; see wildlife-friendly garden tips.
- Slopes. Take care with wheeled mowers, and consider hiring help for steep banks.
- Hedgehogs and wildlife. Check long grass before strimming or mowing.
Keep a simple record
Note the dates and heights you cut in a notebook or phone. After a year you will know when your lawn actually starts and stops growing, and can plan visits or help accordingly.
Frequently asked questions
Can I mow in winter?
Only occasionally, on mild dry days, if the grass has grown. Use the highest setting and avoid frosted or waterlogged ground.
What is the best height for a lawn?
For most family lawns, 3 to 5cm works well through the growing season, with the top end in summer and shade. Fine ornamental lawns can be shorter but need more care.
Should I collect the clippings?
Collect them when they are long, wet or when weeds or disease are present. Short, dry clippings can be left to feed the lawn and help it retain moisture.