Why compost in a small town garden?

You don't need an allotment or a sweeping rural garden to make your own compost. A modest town plot, a courtyard, or even a paved back yard can produce a steady supply of dark, crumbly compost that feeds your soil, mulches your borders, and cuts down on what you send to landfill. It's one of the most satisfying garden jobs: free, quietly magical, and genuinely good for the planet. The secret is to work with the space you have, keep things tidy, and get the balance of ingredients right.

Choosing and siting a lidded bin

In a small garden, a lidded bin is your best friend. An open heap invites rats, foxes, cats, and flies. A sturdy bin with a tight-fitting lid keeps them out and stops rain turning your compost into a soggy, smelly mess. A 200–300 litre plastic bin (the kind with a base and a lid) is plenty for most households. If you have a little more room, a wooden slatted bin with a lid works well too.

Site it on bare soil if you can, so worms and microbes can move in. On paving, place a layer of twiggy prunings at the bottom for drainage and add a few handfuls of garden soil or old compost to introduce life. Choose a spot that gets some sun – warmth speeds up decomposition – but don't hide it so far away that you stop using it. Near the kitchen door is practical, but not so close that smells become a problem. A shady corner behind the shed is fine, as long as you keep the lid on.

Getting the green and brown balance right

Composting is a simple equation: greens plus browns plus air plus moisture equals compost. Greens are wet, nitrogen-rich materials. Browns are dry, carbon-rich materials. In a small bin, the most common mistake is adding too many greens and not enough browns. Aim for roughly two parts brown to one part green by volume – a couple of handfuls of cardboard for every handful of kitchen scraps.

Greens include:

• Fruit and vegetable peelings, tea leaves, coffee grounds
• Grass clippings (in thin layers, never a thick mat)
• Young weeds before they set seed
• Fresh plant trimmings and spent flowers

Browns include:

• Cardboard (torn up, no shiny tape), egg boxes, toilet roll tubes
• Prunings (chopped small), dry leaves, straw, sawdust from untreated wood
• Paper, newspaper (avoid glossy magazines), paper bags

What to add and what to leave out

Keep your bin pest-free by being strict about what goes in. Never add cooked food, meat, fish, dairy, or bones – these attract rats and foxes and create awful smells. Don't add dog or cat faeces, disposable nappies, or diseased plants. Perennial weeds like bindweed, ground elder, or dock roots can survive composting unless your bin gets really hot, so leave them out. Also avoid glossy paper, plastic, and anything labelled biodegradable that isn't certified for home composting.

Do add a sprinkling of soil or finished compost now and then. It introduces the microorganisms that do the work. If you have a lot of kitchen waste, keep a small caddy in the kitchen and empty it into the bin every day or two. Bury the freshest waste in the middle of the bin to discourage fruit flies.

Keeping the bin working through the seasons

UK weather keeps composters on their toes. In summer, your bin may dry out – check by squeezing a handful. If it's crumbly and dry, add water or more greens. If it's soggy and smelly, add cardboard and turn it. In winter, cold slows everything down. That's normal. Keep adding, but expect little decomposition until spring. You can insulate the bin with an old carpet or sack, but don't seal the lid completely; air is still needed.

Turning the compost every few weeks adds air and speeds things up. A small garden fork or a compost aerator tool makes this easy. If you can't turn it, don't worry – it will still rot down, just more slowly. In a small bin, you can also use a stick to poke holes down to the bottom to let air in.

When it's ready and how to use it

Your compost is ready when it's dark, crumbly, and smells earthy – like woodland soil. You shouldn't recognise much of what went in. This can take three to twelve months, depending on the season and how often you turn it. If you need the space, you can harvest the finished compost from the bottom of the bin and return any unrotted bits to the top.

Use your homemade compost as a mulch around shrubs, perennials, and vegetables. It suppresses weeds, feeds the soil, and improves drainage. You can also mix it into potting compost for containers, or make a compost tea by steeping a sack of it in water. In a small town garden, every barrowload is precious. Even a modest bin can transform your borders, your pots, and your sense of what a town garden can do.