Short answer: A healthy UK lawn follows the seasons. Spring (March–May) is for the first cuts, a spring feed and light repairs. Summer (June–August) is mostly mowing and watering in dry spells. Autumn (September–October) is the big maintenance window — scarify, aerate, overseed and apply an autumn feed. Winter (November–February) is rest: stay off frosty grass and let it recover. Below is what to do each month, with links to step-by-step guides.
Lawns don't need the same care all year. Feeding dormant grass in winter wastes product, and scarifying in high summer can shred a stressed lawn. The trick is doing the right job at the right time — and adjusting for the weather rather than following a fixed date blindly.
The year at a glance
| Month | Main focus | Key jobs |
|---|---|---|
| January | Rest | Keep off frosty grass; brush off leaves and debris |
| February | Prep | Service the mower; plan repairs; improve drainage on wet spots |
| March | Wake-up | First light cut (blades high); tidy edges |
| April | Growth | Mow weekly; apply a spring feed; spot-repair bare patches |
| May | Growth | Regular mowing; treat weeds and moss; water new seed |
| June | Maintain | Mow weekly; water in dry spells; raise the cutting height |
| July | Maintain | Mow (blade high); water deeply if dry; leave clippings in drought |
| August | Maintain | Same as July; start planning autumn renovation |
| September | Renovate | Scarify, aerate, overseed; apply an autumn feed |
| October | Renovate | Finish overseeding; keep mowing while it grows; clear leaves |
| November | Wind down | Final cut if still growing; clear leaves; aerate if not done |
| December | Rest | Stay off waterlogged and frozen grass |
Spring (March–May): wake the lawn up
As soil warms above about 8°C, growth restarts. Give the first cut with the blades set high, then drop the height gradually over a few weeks — never scalp it in one go. See how often to mow and how short.
Spring is the time for a high-nitrogen spring feed to green things up, and to tackle moss and weeds while they're small. Read when to feed your lawn for timing and feed types.
Summer (June–August): mow, water, don't stress it
In summer the job is mostly steady mowing and watering. Raise the cutting height — longer grass shades the soil and copes better with drought. Water deeply and infrequently rather than a little every day, and let the forecast decide: see how often to water your lawn.
In a heatwave, it's fine to let the lawn go straw-brown; it's dormant, not dead, and greens up when rain returns. Leaving clippings on the surface during dry spells helps retain moisture.
Autumn (September–October): the big renovation window
Autumn is the most important season for a great lawn. Warm soil and reliable rain make it the best time to repair and thicken:
- Scarify to rake out moss and thatch.
- Aerate compacted soil to improve drainage and root growth.
- Overseed thin or bare areas — germination is fastest now.
- Apply an autumn feed (high in potassium, low in nitrogen) to toughen the lawn for winter — not a spring feed, which pushes soft growth at the wrong time.
Winter (November–February): let it rest
Growth stops. Keep off the grass when it's frosty or waterlogged — walking on frozen blades damages them. Clear fallen leaves so light and air can reach the surface, and use the quiet months to service your mower and plan next year's repairs.
Let the weather fine-tune the calendar
A calendar gives you the rhythm, but the UK weather rarely reads the script. A mild February can start growth early; a cold, wet April can push everything back. The best results come from adjusting each job to real conditions — mowing when it's grown, watering only when it's dry, feeding when the soil is warm enough.
That's exactly what YardIQ does: it builds a weekly plan from your local forecast and a photo of your lawn, so you get the right job at the right time instead of a fixed date.
Frequently asked questions
When should I start mowing my lawn in spring?
Start when the grass is actively growing again, usually from March once soil temperatures reach around 8°C. Make the first cut with the blades set high, then lower the height gradually over the following weeks.
What is the best month to scarify and overseed a UK lawn?
Early autumn — September into early October — is ideal. The soil is still warm from summer and rainfall is more reliable, so grass seed germinates quickly. Spring (April–May) is the second-best window.
When should I feed my lawn?
Apply a high-nitrogen spring feed around April–May, and an autumn feed (high in potassium, low in nitrogen) in September–October. Avoid feeding in winter when the grass is dormant. See when to feed your lawn for details.
Should I mow the lawn in winter?
Usually no. Growth largely stops in winter, so regular mowing isn't needed. If there's a mild spell and the grass is dry and still growing, a very light topping with high blades is fine — but never mow frosty or waterlogged grass.