Lawn Care Calendar UK

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Applying lawn treatment in spring UK garden

Knowing what to do is only half the battle – knowing when to do it is just as important. Get the timing wrong and even good lawn care practices can backfire.

This month-by-month calendar tells you exactly what your lawn needs throughout the year. Bookmark it, print it, stick it on the shed wall – whatever helps you stay on track.

January

Priority: Leave it alone

January is hands-off time. Your lawn is dormant, the ground is often frozen or waterlogged, and there’s nothing productive you can do. In fact, walking on frozen grass damages the blades, so stay off it entirely when there’s frost.

Tasks:

Keep off frozen grass
Brush off any debris when conditions allow
Service your mower ready for spring
Plan any changes you want to make this year

February

Priority: Prepare for spring

Still largely dormant, but longer days mean spring isn’t far away. Late February can bring mild spells where grass starts stirring.

Tasks:

Continue staying off frozen or waterlogged grass
Check mower is serviced and blades are sharp
Order lawn treatments and grass seed ready for spring
On mild dry days, lightly rake to remove debris

March

Mowing lawn in summer UK garden

Priority: Wake-up call

March is when everything changes. As temperatures rise above 8-10°C, grass starts growing actively. This is your cue to begin spring lawn care.

Tasks:

First mow when grass is actively growing (set mower high)
Rake to remove winter debris, leaves and dead moss
Assess lawn condition – note moss, bare patches, weeds
Apply spring feed if grass is growing well (late March onwards)

April

Priority: Treatment month

April is prime time for tackling problems. Soil is warming, grass is growing strongly, and treatments work most effectively.

Tasks:

Apply spring feed/weed/moss treatment if not done in March
Treat moss – it turns black within days
Rake out dead moss after 2 weeks
Overseed bare patches from mid-April
Mow weekly, gradually lowering height

May

Priority: Building momentum

Growth accelerates through May. This is maintenance mode – keeping on top of mowing and watching for any issues that emerge.

Tasks:

Mow weekly or twice weekly as needed
Reach target summer height (3-4cm)
Spot-treat any weeds that survived spring treatment
Water new grass seed if weather is dry
Edge borders for a neat finish

June

Scarifying lawn in autumn

Priority: Peak season

June is usually the easiest month. Long days, warm temperatures and adequate rainfall mean grass grows vigorously with minimal stress.

Tasks:

Mow twice weekly at peak growth
Leave clippings to mulch (free fertiliser)
Optional: apply summer feed if lawn looks pale
Watch for signs of drought stress if weather turns hot
Treat any remaining weeds before they set seed

July

Priority: Drought watch

July often brings the first heatwaves. Your approach may need to shift from “making it perfect” to “keeping it healthy.”

Tasks:

Raise mowing height before hot spells (longer grass copes better)
Reduce mowing frequency if growth slows
Water deeply but infrequently – or let it go dormant
Never fertilise drought-stressed grass
Move garden furniture to spread wear

August

Priority: Survival and recovery

August is often the toughest month, especially in dry years. By late August, conditions start improving and you can think about recovery.

Tasks:

Continue drought management if needed
Reduce foot traffic on stressed grass
Late August: resume normal mowing as conditions cool
Note areas that need repair in autumn
Plan autumn renovation tasks

September

Frosty lawn in winter UK garden

Priority: Renovation window

September is the most important month for lawn improvement. Warm soil and cooler air create perfect conditions for all the big jobs.

Tasks:

Scarify if thatch is more than 1cm thick
Aerate compacted areas
Overseed thin patches early in the month
Apply autumn feed after renovation
Continue regular mowing

October

Priority: Feeding and protection

October shifts focus from renovation to preparation. The goal is strengthening your lawn for winter.

Tasks:

Apply autumn feed if not done in September
Treat moss if it’s a recurring problem
Clear fallen leaves weekly
Continue mowing as growth slows
Gradually raise mowing height

November

Priority: Winding down

Growth slows significantly. Your main jobs are keeping the lawn clean and preparing for the dormant months.

Tasks:

Final mow at raised height (around 4cm)
Continue clearing leaves
Brush off worm casts when dry
Optional: apply winter feed for colour through winter
Reduce foot traffic on wet grass

December

Priority: Rest

The lawn is dormant. Your only jobs are keeping it clean and staying off it in bad conditions.

Tasks:

Clear any remaining leaves
Stay off frozen or waterlogged grass
Brush debris when conditions allow
Clean and store mower properly
Review the year and plan for next season

Quick Reference: Key Tasks by Season

Spring (March-May): First mow, spring feed, moss treatment, overseeding, weed control

Summer (June-August): Regular mowing, drought management, optional summer feed, weed spot-treatment

Autumn (September-November): Scarifying, aerating, overseeding, autumn feed, leaf clearing, final mow

Winter (December-February): Stay off frozen grass, clear debris, service equipment, plan ahead

Frequently Asked Questions

What’s the most important lawn care month?

September. The renovation work you do in September – scarifying, aerating, overseeding – has the biggest impact on how your lawn looks next year. April is important too, but September is when you fix underlying problems.

Can I skip months if my lawn looks fine?

You can reduce effort on a healthy lawn, but don’t skip feeding entirely. At minimum, feed in spring (March-April) and autumn (September-October). These two feeds make the biggest difference.

What if I’m behind schedule?

Better late than never for most tasks, but some have firm deadlines. Don’t overseed after mid-October or scarify after early October – wait until next year. Spring feeding can extend into May if needed.

How do I know when to start spring tasks?

Watch your grass, not the calendar. When you see active growth (usually when daytime temperatures consistently reach 8-10°C), it’s time. This is typically mid-March in the south, late March or April further north.

For more detailed guides on every lawn care task mentioned here, visit our full lawn care guide.

Want to simplify your lawn care calendar? Our Year Round Lawn Treatment Bundle includes all four seasonal feeds in one box. Each treatment is clearly labelled with when to apply, so you’ll never miss the right time again.

About the author 

Chelsey

Hey there, I am founder and editor in chief here at Good Grow. I guess I've always known I was going to be a gardener. I'm on a mission to share my UK based weed control & lawn care tips with you all. If you have any queries please post in the comments below.


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