In most of the UK, the first proper frost lands somewhere between late September and early November. Inland Scotland and northern England usually see it first; Cornwall and the milder coastal west can hold out until December. Either way, you have roughly six to ten weeks to close the garden down properly — long enough to do it well, short enough that it's worth starting this weekend.
The goal isn't a spotless plot. It's a garden that comes through winter with living soil, protected roots and enough shelter for the birds and insects that do the quiet work.
September: tidy, but hold back
Start with the easy wins. Keep deadheading dahlias, cosmos, roses and penstemons and they'll flower until the first hard frost. Clear spent annuals from pots and beds before slugs get comfortable in them.
Then resist the urge to cut everything to the ground. Seedheads on teasel, echinacea, sedum, eryngium and honesty stand up beautifully against frost and give goldfinches something to argue over in January. Hollow stems left at 30–45cm make winter shelters for overwintering insects.
Plant spring bulbs
From mid-September, get daffodils, crocus, snowdrops, alliums, camassia and fritillaries into the ground. Plant most bulbs at roughly three times their own depth; in heavy clay, sit each one on a small handful of grit so it doesn't rot. Tulips are the exception — leave those until November, which helps avoid tulip fire.
Give the lawn its autumn service
Early to mid-September is the best window for scarifying, aerating and feeding a lawn, while growth is strong enough to recover. Leave it until November and the moss simply moves back in.
October: the main push
As the nights cool, work through the jobs that decide whether plants survive to spring.
Lift or move tender plants
Dahlias, cannas, begonias, gladioli and pelargoniums need to be out of the ground before the soil turns properly cold. Wait until the first frost blackens the foliage, then cut stems back to 10–15cm, lift the roots with a fork and let them dry upside down somewhere airy for a week or two. Store them in a cool, frost-free garage or shed in barely damp compost, vermiculite or newspaper. Label everything; every tuber looks identical by February.
Potted citrus, olives, bay and agapanthus should come under cover before night temperatures drop below about 5°C. They cope with cold far better if they're dry, so ease off the watering can as you move them.
Leaves, light and drainage
Rake fallen leaves into bin bags punched with a few holes, tie the tops loosely and leave them behind the shed. In a year or so you'll have leafmould — the best free soil conditioner going. Clean the greenhouse glass now so every hour of weak winter light counts, and check gutters and drains before the autumn rain settles in. Under fruit trees, pick up fallen fruit rather than leaving it to rot; it's one of the simplest ways to reduce pests and disease next season.
November: protect, plant and mulch
Bare-root season has begun, and it's the cheapest, most reliable way to plant roses, fruit trees, hedging and ornamental trees. They establish faster than potted stock, provided the ground isn't frozen or waterlogged. Plant garlic now for a head start — it needs a cold spell to split into cloves. In mild, free-draining areas you can also sow broad beans, though they're a gamble in wet soil.
Mulch borders with well-rotted manure or garden compost, spreading it 5–8cm deep and keeping it clear of stems and crowns, while the soil is cool but not frozen. Then insulate outdoor taps and lag exposed pipes. A split pipe in January is a misery you can avoid in an afternoon.
Pots and containers: where frost does real damage
Roots in a pot are far more exposed than roots in the ground. Cold reaches them from every side, and wet compost freezing around them is what kills plants — not the cold alone.
- Group pots together against a house wall or in a sheltered corner. The mass of compost holds warmth.
- Raise them off the ground on pot feet or bricks so water drains rather than pooling and freezing.
- Wrap the outside of terracotta and glazed pots with bubble wrap, hessian or old fleece, tied with twine.
- Remove saucers for winter — standing water is the quickest route to rotted roots.
- Water sparingly, and only on mild mornings. Don't feed. Dry cold is survivable; wet cold usually isn't.
- Choose frost-proof containers for anything permanent. Stone, wood and thick plastic survive; thin terracotta and delicate glazes often don't.
Feed the soil, and leave the clay alone
Autumn is the best time to improve soil, because worms and weather do the digging for you. Spread compost or leafmould over empty beds and let it work down over winter. If ground is bare after clearing crops, sow a green manure such as field beans or grazing rye in September or early October to hold nutrients and stop rain washing goodness away.
The one thing to avoid is digging heavy clay when it's wet. Turning or walking on sodden clay smears it into an airless mass that takes years to repair. Stay off it, or lay boards down to spread your weight, and wait until it crumbles in your hand.
Twelve jobs to tick off before the frost
- Deadhead late flowers; cut back anything mildewed or collapsed.
- Plant daffodils, crocus, alliums and other spring bulbs.
- Scarify, aerate and feed the lawn while growth is strong.
- Order tulips, then plant them from November onwards.
- Lift dahlias, cannas and gladioli after the first frost; store frost-free.
- Bring citrus, olives, bay and agapanthus under cover.
- Rake leaves into bags to make leafmould.
- Clean greenhouse glass; check gutters, drains and water butts.
- Wrap, group and raise pots, and take off the saucers.
- Plant bare-root roses, trees and hedging.
- Mulch beds with compost or well-rotted manure.
- Lag outdoor taps, insulate pipes, and clean and sharpen your tools.
If you only have one weekend
Do the jobs that are hard to reverse: move tender plants under cover, raise and wrap the pots, and mulch anything with shallow roots. The leaves, the lawn and the tidying can all wait, and none of them will be ruined by a frost.
Then make a cup of tea and look at what you've got. A garden in November isn't finished. It's resting, and most of what you've just done is the setup for next April.
Photo: Vero Lova / Pexels
