Ask any gardener what the single best thing you can do for your soil is, and most of us will give you the same answer: compost. It improves drainage in heavy soils, helps sandy soils hold moisture, feeds your plants slowly and naturally, and turns your kitchen and garden waste into black gold — all for nothing. If you’re not making your own yet, this is the year to start.
Choosing Your Compost Bin
You don’t need anything fancy. A simple plastic “dalek” bin works well in a small garden, while a timber bay built from old pallets is ideal if you’ve space and plenty of material. The key is contact with the soil beneath, so worms and other helpful creatures can get in and do their work.
If you can manage two bins, even better — one to fill while the other rots down. Position them in a spot that’s easy to reach year-round, because a compost heap at the far end of the plot tends to get forgotten.
Getting the Balance Right
This is where most people go wrong. Good compost needs a balance of two things: “greens” and “browns.”
Greens are soft, moist, nitrogen-rich materials — grass clippings, vegetable peelings, coffee grounds, and spent plants. Browns are dry, carbon-rich materials — cardboard, shredded paper, dead leaves, and woody prunings.
Aim for roughly equal amounts of each by volume, layered or mixed together. Too many greens and you’ll end up with a slimy, smelly mess. Too many browns and it’ll sit there doing nothing for months.
What to Add — and What to Avoid
Plenty goes in: fruit and veg scraps, teabags (check they’re plastic-free), eggshells, grass cuttings, soft prunings, cardboard, and fallen leaves.
Keep these out: cooked food, meat and fish, and dairy, which attract rats and turn foul. Avoid diseased plants, perennial weed roots like bindweed and couch grass, and anything treated with weedkiller. Dog and cat waste is a no, too.
Keeping It Cooking
A compost heap needs air and moisture to work. Turn it every few weeks with a fork to let oxygen in — this speeds things up no end and stops it going slimy. If it looks dry, give it a water; if it’s sodden, mix in more browns and cover it from the rain.
A well-managed heap warms up nicely in the middle, which is exactly what you want. That heat is the bacteria hard at work breaking everything down.
Common Problems and How to Fix Them
If your heap smells bad, it’s too wet and short on air — add browns and turn it. If it’s bone dry and nothing’s happening, add greens and a drop of water. If it’s attracting flies, bury fresh scraps under existing material rather than leaving them on top.
Don’t panic if it’s not perfect. Compost happens whether you fuss over it or not — turning and balancing simply speeds it along.
When Is It Ready?
Depending on the time of year and how often you turn it, compost takes anywhere from a few months to a year. You’ll know it’s done when it’s dark brown, crumbly, and smells pleasantly earthy — like a forest floor. Any lumps that haven’t broken down can go straight back in the next batch.
Spread it over your beds, dig it into planting holes, or use it as a mulch. Your plants will thank you for it, and you’ll never look at a vegetable peeling the same way again.
