Clearing autumn leaves and composting: from waste to garden gold

Leaves: not waste but gold for your garden

October. The garden turns yellow, orange and crimson. Gorgeous to look at, but once all those leaves hit the ground the real work begins. Or rather: the opportunity. Autumn leaves aren't waste. They're free nutrition for your soil, insulation for your plants and a home for all sorts of useful soil life.

GardenWorld helps you visualise your garden's potential after seasonal care. A great way to picture your garden once the autumn jobs are done.

Why clear leaves at all?

Not everywhere. On borders and under shrubs, leaves can stay put. They form a natural protective layer. But on the lawn, paved paths and in gutters, they need to go.

A thick layer on the grass smothers the turf and encourages fungal disease. On wet paving, leaves become treacherously slippery. And blocked gutters mean overflowing rainwater and damp problems.

Timing

Start clearing once most leaves have fallen, usually around late October or early November. Starting earlier is pointless: more keep dropping. Don't wait too long either, because wet leaves compact into a mat that's difficult to remove.

Raking or blowing?

The classic leaf rake works brilliantly and is pleasantly quiet. On a small lawn you'll be done in half an hour. For larger gardens, a leaf blower is handy. Choose one that also vacuums and shreds: it saves time when composting.

Most tool hire shops rent leaf blowers if you don't want to invest. Tip: blow the leaves to a few central points and scoop them from there. Much more efficient than trying to blow everything to one corner.

Composting: the smart route

Autumn leaves are ideal composting material, but they decompose slowly on their own. Mixed with vegetable peelings, grass clippings and coffee grounds, the process speeds up considerably. The mix of carbon-rich material (leaves) and nitrogen-rich material (green waste) is exactly what a compost heap needs.

Shredded leaves compost far faster than whole ones. Run over them with the mower or use a blower with a shredding function. Smaller pieces give bacteria and fungi more surface area to work with.

Making leaf mould

The simplest thing you can do with autumn leaves: stuff them into a wire mesh cage or large plastic bag with holes punched in it, dampen them and let nature do the rest. After a year you'll have leaf mould: a dark brown, crumbly substance that's fantastic as a soil conditioner. It retains moisture, improves soil structure and earthworms absolutely love it.

Which leaves and which not?

Most leaf types compost well. Oak and beech decompose a bit more slowly due to their higher tannin content. Walnut leaves contain juglone, a substance that inhibits some plants. Composting largely neutralises this, but mix them with other leaves to be safe.

Diseased leaves from roses (with black spot) or horse chestnuts (with leaf miner) are better off in your council green waste bin. Industrial composting facilities reach temperatures high enough to kill pathogens; your home compost usually doesn't.

Leaves as winter protection

A layer of leaves ten to fifteen centimetres deep over vulnerable borders acts like a duvet for your plants. It insulates roots against frost and slowly breaks down into nutrition. In spring, rake away the remains or work them into the top layer of soil.

RHS partner shops and garden centres sell leaf cages for tidy storage until you need them. But a simple pile in a garden corner works just as well.

Make it a habit

Clearing autumn leaves doesn't have to be a mammoth operation. Do it in stages: half an hour of raking and composting each week. Before you know it, you've got a clean garden and a compost heap that's slowly transforming into the best thing you can give your soil.

Curious how your garden looks once the autumn work is done? Check it out on GardenWorld and plan your next season.