How-to
UK Lawn Care Calendar: What to Do to Your Lawn Month by Month
10 min read · Updated September 2026
A good lawn is built up gradually over the year rather than fixed in a single weekend, and most of the common problems we see, patchy grass, moss, thin autumn growth, come from a handful of jobs being missed at the wrong time rather than a lack of effort overall. Doing the right task in the right month makes far more difference than doing lots of work at the wrong time of year.
This calendar sets out what a typical UK lawn needs, month by month, based on the growing conditions we see across Wokingham, Earley, Winnersh, Arborfield, Spencers Wood, Sindlesham, Farley Hill and Bracknell. Exact timing will shift a little depending on the weather in any given year, a cold, wet spring pushes the first proper feed back, and a mild fine autumn can extend the scarifying window, but the sequence below holds true in most years.
Whether you are managing your own lawn or deciding which jobs to hand to a professional, this guide will help you plan ahead rather than reacting to problems once they appear.
Month by month: key lawn care jobs
| Period | Key jobs |
|---|---|
| January / February | Keep off frosted or waterlogged grass, clear fallen leaves and debris, service the mower ready for spring |
| March | First cut of the year once growth resumes, mower on a high setting, light raking of dead material |
| April | Gradually lower mowing height, apply first spring feed (high nitrogen), start weekly mowing |
| May | Light scarifying if needed, spot-treat weeds, continue regular mowing, overseed bare patches |
| June | Mow weekly, water only during prolonged dry spells on new lawns, monitor for pests |
| July | Raise mowing height slightly in hot dry weather, avoid cutting stressed brown grass too short |
| August | Continue regular mowing, prepare for main autumn renovation work |
| September | Main scarifying and aeration window, overseed thin areas, apply autumn feed (high potassium) |
| October | Final feeds, continue overseeding if mild, clear leaves regularly to prevent smothering |
| November / December | Reduce mowing frequency then stop, keep off frosted or waterlogged lawn, clear remaining leaves |
January and February: dormant season care
Grass barely grows during these months, so the main job is protecting the lawn rather than actively working on it. Avoid walking on a lawn that is frosted or waterlogged, since both frozen and saturated grass are easily damaged, leaving marks that can take months to grow out. Keep leaves and debris cleared so the surface can breathe.
This is a sensible time to service or sharpen the mower ready for the season ahead, so it is not sitting in a workshop queue the first warm week of spring.
March: the first cut
Once growth clearly resumes, usually mid to late March in the Thames Valley area, give the lawn its first cut on a high mower setting. Cutting too low too soon stresses grass that has not fully woken up. A light rake to lift matted, dead grass left over from winter helps air and light reach the crown of the grass.
April: feeding begins
April is usually the month to apply the first proper feed of the year, using a high-nitrogen spring or summer lawn feed to encourage strong green growth. Mowing height can be gradually lowered as the lawn thickens up, and by late April most lawns are ready for weekly mowing through the main growing season.
May and June: growth and light renovation
May is a reasonable window for light scarifying if the lawn has a build-up of thatch, though the main scarifying job is better saved for autumn when the lawn has more time to recover before winter. Bare or thin patches can be overseeded now while soil temperatures are warming and there is still reliable rainfall.
Established lawns rarely need watering during a normal UK spring or early summer. Save watering for genuinely prolonged dry spells, and prioritise newly seeded or newly laid areas over an established lawn, which will usually recover on its own once rain returns.
July and August: managing summer stress
During hot, dry weather it is worth raising the mower height slightly rather than cutting hard, since scalping stressed, drought-affected grass slows recovery and encourages weeds to take hold in the gaps. Avoid the temptation to water an established lawn just because it has gone slightly brown, most UK lawns recover fully once cooler, wetter weather returns in autumn, and frequent light watering during a hosepipe restriction period is best avoided anyway.
Use these months to plan ahead for the autumn renovation work, which is the single most important period in the lawn care year.
September: the main renovation window
September is generally regarded as the best month for the two most important jobs of the year: scarifying, which removes thatch and moss, and aeration, which relieves soil compaction and improves drainage. Soil is still warm from summer but rainfall is more reliable, which gives grass seed and the lawn itself the best chance to recover quickly.
This is also the right time to overseed thin or bare areas and to apply an autumn feed. Autumn feeds are formulated with higher potassium and lower nitrogen than spring feeds, which strengthens roots and improves winter hardiness rather than pushing soft, leafy growth that will struggle once the weather turns.
October: winding down
If September's renovation work was delayed, October is usually still workable for scarifying, aeration and overseeding in a mild year, though results become less reliable the later it gets. Continue applying a final feed if not already done, and stay on top of fallen leaves, since a thick layer left on the lawn for even a week or two can smother and yellow the grass underneath.
November and December: closing the lawn down for winter
Mowing frequency should reduce steadily through November before stopping for winter once growth has genuinely halted. As in the depths of winter, avoid walking on frosted or waterlogged grass. Continue clearing leaves through this period, since deciduous trees often keep shedding into December.
Moss and weed treatment can be considered here too if problems are visible, though many professional treatments work best when applied slightly earlier in autumn while the grass is still actively growing enough to recover from any disturbance.
Watering, moss and weed control notes
- Established lawns rarely need watering in a typical UK year; reserve it for newly seeded areas or extended droughts
- Iron-based treatments help control moss while also greening up grass without excessive top growth
- Persistent moss is usually a symptom of poor drainage, shade, or compaction rather than a standalone problem
- Spot-treat isolated weeds rather than blanket-treating an entire lawn where only a small area is affected
- Avoid feeding and weedkiller applications in very hot, dry weather, since stressed grass can be damaged
Typical costs for professional seasonal lawn treatments
| Treatment | Typical price | Best timing |
|---|---|---|
| Feed and weed treatment visit | £25 - £45 | Spring and autumn |
| Moss treatment (iron-based) | £25 - £45 | Autumn or as needed |
| Scarifying (medium garden) | £60 - £150 | September, or spring for light work |
| Aeration (medium garden) | £50 - £120 | Autumn, ideally alongside scarifying |
| Overseeding (medium garden) | £40 - £100 | After scarifying, spring or autumn |
| Full autumn renovation package | £150 - £350 | September to October |
Getting professional help with your lawn calendar
Fitting scarifying, aeration and overseeding into the right narrow autumn window is where most DIY lawn care plans slip, particularly if you are relying on hired equipment around a busy schedule. We carry out seasonal lawn treatments across Wokingham, Earley, Winnersh, Arborfield, Spencers Wood, Sindlesham, Farley Hill and Bracknell and can plan a season's work around your lawn's actual condition rather than a generic template.
Frequently asked questions
- When should I do my first lawn cut of the year?
- Usually in March once growth has clearly resumed, on a high mower setting. Cutting too early or too short can stress grass that has not fully come out of dormancy.
- Is spring or autumn better for scarifying?
- Autumn, generally September, is the main scarifying window because soil is warm and rainfall is more reliable, giving the lawn time to recover before winter. A lighter scarify in spring is possible if needed.
- Do I need to water my lawn in summer?
- Established lawns rarely need watering even during a dry UK summer and usually recover once rain returns. Newly seeded or newly laid lawns need more consistent watering.
- What is the difference between spring and autumn feed?
- Spring and summer feeds are higher in nitrogen to promote leafy green growth, while autumn feeds are higher in potassium to strengthen roots and improve winter hardiness.
- How do I get rid of moss in my lawn?
- Treat with an iron-based moss killer, then scarify to remove the dead moss and improve drainage and light at the base of the grass. Persistent moss often points to shade, compaction or poor drainage that also needs addressing.