How to Prepare Your Garden for Winter: A UK Homeowner's Guide

A little work in October and November pays dividends come spring. The UK climate — wet, cold winters with occasional hard frosts — can be harsh on plants, lawns, water features, and garden structures. This practical, step-by-step guide covers everything you need to do to protect your garden and set it up for a strong start in 2026.

1. Lawn Care: Last Mow, Scarify, and Aerate

Your lawn needs a bit of late-season attention before the cold sets in. Follow these steps for a healthy lawn come spring:

1. Final mow (late October) — Drop the blade slightly lower than your summer height for the last cut of the season, but don't scalp it. Aim for around 4–5cm. Don't mow in frost or waterlogged conditions — you'll damage the turf.
2. Scarify (September–October) — Raking out thatch (dead grass and moss) lets air and water reach the roots. Use a spring-tine rake or powered scarifier for larger lawns. This is best done while the grass is still actively growing so it can recover.
3. Aerate (October) — Push a garden fork in 10–15cm deep across the lawn in a grid pattern, or use a hollow-tine aerator for compacted lawns. This improves drainage and prevents waterlogging over winter.
4. Overseed bare patches (September) — Autumn is a good time to overseed thin areas while the soil is still warm enough for germination. Water in well and protect from birds.
5. Autumn lawn feed — Use a low-nitrogen, high-potassium autumn fertiliser to strengthen roots without promoting leafy growth that'll be damaged by frost.
6. Keep off frozen or waterlogged grass — Walking on a frozen lawn damages the cell structure of grass blades, leaving brown footprint marks that last for weeks.

If you'd rather hand the lawn care over to a professional, our guide on how to find a reliable gardener explains what to look for when choosing someone for seasonal lawn care.

2. Borders and Beds: Cut Back and Mulch

1. Cut back perennials — Most herbaceous perennials can be cut back to within 10–15cm of the ground in late October or November. However, leave some seed heads standing — they provide food for birds and can look beautiful covered in frost. Grasses are best left until late winter before cutting back.
2. Lift and divide overgrown clumps — Autumn is ideal for dividing hostas, daylilies, and other clump-forming perennials. Dig up, split into sections, and replant or pot up spare pieces.
3. Clear annuals and dead material — Remove spent summer annuals and any diseased material. Don't compost diseased plants — bin them or take to a council tip.
4. Mulch beds generously — Apply a 5–10cm layer of well-rotted garden compost, bark chips, or leaf mould over borders. Mulching insulates roots, suppresses winter weeds, and improves soil structure. Keep mulch away from the base of woody plants to prevent rotting.
5. Plant spring bulbs — October and November are prime time for planting tulips, daffodils, alliums, and other spring bulbs. They need a cold period to trigger flowering.

3. Tender Plants: Protect What You've Got

1. Move tender plants inside — Dahlias, begonias, cannas, pelargoniums (geraniums), and most succulents won't survive a UK winter outside. Lift tubers, brush off excess soil, and store in a cool, frost-free place (5–10°C) in dry compost or newspaper.
2. Pot up marginals and patio plants — Tender plants in outdoor pots should come inside to a greenhouse, conservatory, or cool room before the first hard frost. A light frost won't kill most, but repeated freezing and thawing will damage roots.
3. Fleece borderline-hardy plants — Slightly tender wall shrubs, tree ferns, echiums, and banana plants can stay outside if protected with horticultural fleece. Wrap loosely to allow some air circulation — a tight wrap can cause rotting.
4. Lag container roots — Containers left outside should have their pots wrapped in bubble wrap or hessian to protect roots from hard frosts that penetrate terracotta and ceramic pots.
5. Lift and store dahlias (after first frost) — Wait until the first frost blackens the foliage, then cut back to about 15cm. Carefully dig up tubers, dry them upside down for a week, then store in dry compost in a frost-free shed.

4. Water Features, Taps, and Pipes

1. Drain hose pipes and store them — Water left in hosepipes will freeze and split the pipe. Disconnect from taps, drain fully, coil, and store in a shed or garage.
2. Turn off and drain outdoor taps — Locate the isolation valve inside (usually under the sink or in a cupboard), turn off the water, then open the outdoor tap to release any remaining water in the pipework. Lag exposed pipes if there's any doubt. This is good practice for the home as well as the garden — our guide on preparing your boiler for winter covers indoor pipe protection too.
3. Ponds — run a pump or float a ball — If you have a pond with fish, keep a pump or aerator running through winter to maintain oxygenation. Alternatively, float a ball or rubber toy on the surface — if it freezes, the ball prevents a complete seal, allowing gas exchange. Never smash ice — the shockwave harms fish.
4. Drain ornamental water features — Bowls, birdbaths, and wall-mounted water features should be drained and the pump stored inside. Freeze-thaw cycles will crack ceramic and stone if water is left in them.
5. Check irrigation systems — Any automatic irrigation or drip systems need draining and the controller set to off. Blow out lines with an air compressor if you have a complex system, or call a professional.

For comprehensive home winterisation beyond the garden, read our complete guide on how to winterise your home in the UK.

5. Cleaning and Storing Garden Tools

Well-maintained tools last for decades. Neglected tools corrode, blunt, and seize up. A few hours spent in autumn means your tools are ready to go when spring arrives.

1. Clean metal blades — Remove soil and debris from spades, forks, hoes, and trowels. Use a stiff brush, then wipe down with an oily rag (WD-40 or linseed oil) to prevent rust.
2. Sharpen blades — A sharp spade cuts through soil far more easily than a blunt one. Use a file or whetstone on hoes, spades, and edging tools.
3. Service the mower — Have your petrol mower serviced, or take it to a small engine repair shop if you haven't already. Drain the fuel tank, clean the blade, and replace the spark plug and air filter. Store in a dry shed.
4. Treat wooden handles — Rub raw linseed oil into wooden tool handles to prevent cracking and extend lifespan.
5. Check and sharpen secateurs and loppers — Proper cutting tools prevent disease spreading between plants. Clean with a disinfectant wipe, sharpen with a small whetstone, and apply a drop of oil to the pivot point.

6. Structural Work to Book Now

Winter and early spring are the best times to book landscaping work. Demand is lower, meaning better availability and sometimes better pricing. Tradespeople can often start sooner, and hard landscaping on frozen or firm ground is sometimes easier than in wet summer conditions.

• New patios, paths, or driveways — installation during winter means it's ready for spring use
• Garden walls and raised beds — masonry work is fine in cold weather with frost protection
• Fencing repairs or replacement — easier to do when borders are cut back
• Decking replacement or treatment
• Drainage improvements — easier to plan and dig when you can see where water pools

See our guide on garden landscaping costs to budget your project, and use GetQuickHelp to get free quotes from local landscapers this winter.

Frequently Asked Questions