A little effort in your garden borders in October and November, while the leaves are turning, makes all the difference to how full and healthy they look next spring. It doesn't need to be complicated, and it doesn't need a weekend. Work through the steps below in order, at your own pace, and your garden will be in great shape to burst back into life when the weather turns.
1. Clear Out Dead and Diseased Plants
Start by removing anything that's finished for the year; spent annuals, faded foliage, and any plant material that looks diseased or mildewed. Leaving this in the border over winter gives pests and diseases somewhere cosy to sit out the cold, ready to cause trouble again in spring. Healthy perennial stems and seed heads are worth leaving in place over winter (more on that below), but anything soggy, blackened, or clearly unwell should come out as soon as you spot it during your October tidy-up.
2. Feed and Protect Your Soil
Your soil does a lot of quiet work over winter, so it's worth giving it some attention in October, before the cold sets in properly.
Add Compost or Well-Rotted Organic Matter
Spread a layer of compost or well-rotted manure over bare soil. As it breaks down over winter, it feeds the soil and improves its structure, meaning better growth for your plants come spring, with very little effort from you.
Mulch to Lock In Warmth and Moisture
Mulching simply means covering the soil with a layer of material, compost, bark, or even fallen leaves, to protect plant roots from harsh frosts and help the soil hold onto moisture. Fallen leaves are a genuinely good, free option: rake them into a layer a few centimetres deep around (not touching) plant stems.
3. Give Everything a Really Good Water Before the First Frost
It sounds counterintuitive to water before winter, but it matters. Plants going into the cold months well-hydrated cope much better with freezing temperatures than those that are already dry and stressed. This is especially true for anything planted more recently; perennials, shrubs, and young trees haven't had time to establish deep root systems yet, so give them a thorough soak before the first hard frost is forecast.
4. How to Cover Plants for the Winter
Some plants need a bit of extra protection, and doing this properly makes a real difference.
What to Use
For most borders, horticultural fleece (sometimes called frost cloth) is the easiest option; it's inexpensive, breathable, and widely available. Old bedsheets or towels also work as a household alternative. For smaller or more tender plants, an upturned bucket, cardboard box, or cloche can offer a simple, sturdy shelter.
What to Avoid
Steer clear of plastic sheeting resting directly on leaves. It might seem like the more waterproof option, but plastic traps moisture against the foliage, which can cause more damage than the frost itself and lead to rot rather than protection.
How to Cover Plants Properly
- Water first - a well-watered plant holds warmth better than a dry one.
- Drape the cover on before the coldest part of the evening, rather than leaving plants exposed until the last minute.
- Secure it at the base so it doesn't blow away overnight, but leave enough slack that it isn't crushing the foliage.
- Remove it in the morning once temperatures rise, so the plant still gets light and air during the day. Covers left on permanently can do as much harm as no cover at all
5. Look After Your Perennials
A herbaceous perennial is simply a plant that dies back above ground in winter and comes back bigger the following year; so if your border looks a little bare by November, that's completely normal, not a sign anything's wrong. Once foliage has died back and turned brown, usually by late November or December, you can cut it back to a few centimetres above the soil. That said, it's worth leaving some sturdy stems and seed heads standing over winter (see the wildlife note below) rather than cutting everything back hard straight away.
6. Protect Roses and Shrubs
Roses and many shrubs benefit from a mound of compost or mulch piled around their base, which insulates the roots against freezing and thawing. For anything newly planted or in an exposed, windy spot, wrapping the top growth loosely in fleece adds an extra layer of protection through the harshest weeks.
7. Don't Forget Container Plants
Pots are more exposed to the cold than plants in open ground, because frost can reach the roots from all sides. Where you can, group containers together against a sheltered wall, and raise them slightly off the ground on pot feet or bricks so they aren't sitting in cold, waterlogged soil. Wrapping pots in bubble wrap or fleece gives extra insulation for anything less hardy.
8. Hold Off on Pruning and Feeding at the Wrong Time
It's tempting to tidy everything and give plants a boost before winter, but timing matters here. Pruning too late in the year can encourage soft new growth that has no chance to toughen up before frost arrives, and it will likely be damaged. Similarly, feeding plants with a high-nitrogen fertiliser in autumn pushes leafy growth at exactly the wrong moment. Save the pruning shears and the fertiliser for spring, from around March onwards.
9. Clean and Store Your Tools
An easy step to overlook, but a satisfying one. Clean soil and sap off spades, secateurs, forks, and other garden tools before putting them away for winter, and give metal parts a light wipe of oil to stop rust setting in. You'll thank yourself when spring arrives, and everything is ready to go.
A Quick Word on Wildlife
Winter borders can do more than just look after themselves; they can look after your local wildlife too. Leaving some seed heads standing gives birds a natural source of food through the colder months, and a small pile of leaves or twigs tucked in a corner offers shelter for insects and hedgehogs. It's a small thing that costs you nothing and helps your garden's ecosystem quietly tick over until spring.
Winter Garden FAQs
What will my garden look like over winter?
In winter, your garden may look bare in places, cut back in others, and generally quieter than in summer - and that's exactly as it should be. Perennials dying back is a normal, healthy part of their growing cycle, not a sign of a problem. Come spring, they'll return fuller than before.
When should I start winterising my garden?
Autumn, once the weather starts to turn but before the first hard frost, is the ideal window - typically from October in most of the UK. Getting soil health and covering sorted before a cold snap arrives gives your plants the best head start.
At what temperature should I cover my plants?
As a general guide, cover tender plants once temperatures are forecast to drop close to freezing (0°C) overnight. Hardier plants can usually cope without extra protection until it turns significantly colder.
Can I leave plant covers on all day?
It's best not to. Removing covers in the morning lets plants get light and air, which helps prevent damp and rot building up underneath. Covers are for overnight protection, not a permanent layer.
Will an old bedsheet actually work as a plant cover?
Yes, a bedsheet or towel is a perfectly good, breathable option for an unexpected cold snap. Just avoid anything plastic-backed, and treat it the same way you would fleece: on in the evening, off in the morning.
Garden Borders from Garden on a Roll
A well-prepped border over winter isn't a showstopper; a bit bare, cut back, and mulched over is exactly what healthy looks like at this time of year. But it's doing all the right things underground, ready to come back fuller next spring.
If you're thinking about adding a new border once the weather turns, Garden on a Roll's ready-to-plant kits arrive with everything included: plants, a template, and a full planting plan, so the only thing left to do is watch it grow. And for more green-fingered advice, discover our gardening blog, full of expert tips and tricks!
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