Composting Setup Checklist
Compost fails for setup reasons far more often than for chemistry reasons. Choose the right method, site it where you will actually use it, and keep two buckets of feedstock ready.
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Choose your method
The waste stream and the space decide the method, not the catalogue.
- COREEstimate a week of your real output: kitchen scraps, grass, leaves, prunings Amazon
- COREPick a cold heap for garden waste, a hot heap for speed, a tumbler for small spaces Amazon
- Check the footprint available: a hot heap wants roughly one cubic metre Amazon
- Decide how much effort you will truly sustain: turning is the hot heap's tax Amazon
Site and set up the bin
A bin you must walk far to reach is a bin that gets neglected.
- COREPlace it on bare, level earth so worms and drainage can work from below Amazon
- COREKeep it within easy carry of the kitchen door and the beds it will feed Amazon
- Give it partial shade: sun dries a heap out, deep shade slows it Amazon
- Assemble for access: an open front or removable door for turning and lifting out Amazon
Stock greens and browns
Both buckets must be full before the heap can run. Keep them stored.
- COREA lidded indoor caddy for kitchen greens, emptied every two or three days Amazon
- COREA stored brown supply: dry leaves, shredded cardboard, straw or husks Amazon
- Shred bulky browns and woody greens so surface area works for the microbes Amazon
- A rainwater bucket near the bin for quick moisture top-ups in dry spells Amazon
Build the first heap
Layer it like a recipe, not like a rubbish tip.
- Start with a coarse base layer for airflow from underneath Amazon
- COREAdd greens and browns in alternating layers, roughly one to two or three by volume Amazon
- COREWater each growing layer until it feels like a wrung-out sponge Amazon
- Finish with a brown blanket on top to keep flies out and heat in Amazon
Run the air and moisture routine
Ten minutes weekly keeps a hot heap hot and a cold heap honest.
Keep the rejects out
The no-list is short, and every item on it costs you a vermin visit or a smell.
Harvest, cure and use
Finished compost is dark, crumbly and smells of a forest floor.
- COREStop feeding a hot heap and let it mature for a few weeks after it cools Amazon
- Screen the crop, returning the coarse leftovers to the new heap as a starter Amazon
- COREBlanket beds with two to three centimetres of finished compost each season Amazon
- Store surplus under cover rather than bagging it damp Amazon
Every garden makes compost, whether it is managed or not. The managed version turns kitchen scraps and garden waste into free fertility within months. The unmanaged version becomes a dry, half-rotten stack that feeds nothing for two years.
Compost works by balancing four inputs: nitrogen-rich greens, carbon-rich browns, moisture and air. Get the mix roughly right at setup and the weekly tending is easy. Get it wrong and the heap goes soggy, smelly or mummified, and the hobby quietly dies.
Setup is where most of that decision is made. The method has to fit your actual waste and space. The bin has to sit where you will carry scraps to it on a wet evening. Greens and browns both need a stored supply, because fresh grass and dry leaves rarely arrive in the same week.
This checklist runs the setup in order. It covers choosing a method, siting and setting up the bin, stocking both feedstocks, building the first heap, and starting the air and moisture routine. It then covers what to keep out, and how to harvest and use the finished compost. For the biology behind the heat see our article on how composting works and what makes it faster.
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At a glance
- Match the method to your real waste stream and space before buying any bin.
- A heap needs roughly one part soft green material to two to three parts dry brown material by volume.
- Site the bin within a short walk of both the kitchen door and the garden beds.
- A slow cold heap is almost always too dry, too compacted or all-browns, in that order.
The full list
The same list the builder above ticks. Use it for printing or when JavaScript is off.
Choose your method
The waste stream and the space decide the method, not the catalogue.
- COREEstimate a week of your real output: kitchen scraps, grass, leaves, prunings Amazon
- COREPick a cold heap for garden waste, a hot heap for speed, a tumbler for small spaces Amazon
- Check the footprint available: a hot heap wants roughly one cubic metre Amazon
- Decide how much effort you will truly sustain: turning is the hot heap's tax Amazon
Site and set up the bin
A bin you must walk far to reach is a bin that gets neglected.
- COREPlace it on bare, level earth so worms and drainage can work from below Amazon
- COREKeep it within easy carry of the kitchen door and the beds it will feed Amazon
- Give it partial shade: sun dries a heap out, deep shade slows it Amazon
- Assemble for access: an open front or removable door for turning and lifting out Amazon
Stock greens and browns
Both buckets must be full before the heap can run. Keep them stored.
- COREA lidded indoor caddy for kitchen greens, emptied every two or three days Amazon
- COREA stored brown supply: dry leaves, shredded cardboard, straw or husks Amazon
- Shred bulky browns and woody greens so surface area works for the microbes Amazon
- A rainwater bucket near the bin for quick moisture top-ups in dry spells Amazon
Build the first heap
Layer it like a recipe, not like a rubbish tip.
- Start with a coarse base layer for airflow from underneath Amazon
- COREAdd greens and browns in alternating layers, roughly one to two or three by volume Amazon
- COREWater each growing layer until it feels like a wrung-out sponge Amazon
- Finish with a brown blanket on top to keep flies out and heat in Amazon
Run the air and moisture routine
Ten minutes weekly keeps a hot heap hot and a cold heap honest.
Keep the rejects out
The no-list is short, and every item on it costs you a vermin visit or a smell.
Harvest, cure and use
Finished compost is dark, crumbly and smells of a forest floor.
- COREStop feeding a hot heap and let it mature for a few weeks after it cools Amazon
- Screen the crop, returning the coarse leftovers to the new heap as a starter Amazon
- COREBlanket beds with two to three centimetres of finished compost each season Amazon
- Store surplus under cover rather than bagging it damp Amazon
Method follows waste, not fashion
Three honest questions pick your method before any bin shopping. How much kitchen waste weekly? How much garden material? How much space and effort will you truly sustain?
A cold heap is the default for garden-heavy households. It takes prunings and leaves in any season, needs almost no tending, and finishes in a year or less. Speed is not its virtue; patience is.
A hot heap is for households that want finished compost within a few months and will pay the turning tax. It needs about a cubic metre of assembled pile to heat properly, and a steady one-to-two-to-three balance of browns to greens.
A tumbling bin suits small spaces and apartment gardens with mostly kitchen waste. It seals odour in, keeps pests out and makes turning a spin instead of a fork workout, though its volume stays limited.
The half-load trap: A hot heap under roughly half a cubic metre of feedstock will never light up. If your household cannot generate material fast enough, run cold or batch with a neighbour.
Match the method to your real waste stream, space and weekly effort. A hot heap you will not turn is worse than a cold heap you forget about.
Site it where your feet will vote
The most sophisticated compost system in the world fails if it sits at the far fence corner. Every scrap you carry is a vote, and rainy evenings always vote against distance.
The workable compromise is near the kitchen for daily scraps, and close enough to the beds that the finished compost will actually be spread. A few metres from both beats fifty metres from one.
Build on bare earth rather than concrete. Worms and microbes migrate up from the soil, drainage stays natural, and the heap's leachate feeds ground instead of pooling. A pad of boards works where earth is waterlogged.
Aim for partial shade or morning sun. A baking afternoon spot dries a small heap faster than you can water it, while deep perpetual shade slows the biology. Dappled light is the sweet spot.
Two-caddy system: Keep one lidded caddy indoors for scraps and one larger outdoor bin at the heap for the walk-ins. Emptying the indoor caddy every two or three days stops any smell question before it starts.
Site the bin within a short carry of the kitchen door and the beds, on bare earth, in partial shade. Convenience is the compost ingredient nobody lists.
Stock both buckets before you need them
Greens are the soft, wet, nitrogen-rich material: fruit and vegetable scraps, coffee grounds, fresh grass and weeds before seed. They heat the heap and rot quickly.
Browns are the dry, carbon-rich material: fallen leaves, shredded cardboard, straw, small twigs and husks. They give structure, hold air and absorb the water greens release.
The two arrive out of sync. Grass and kitchen waste peak in wet seasons while dry leaves fall in autumn, so browns must be stored on purpose. A bag of last autumn's leaves is worth a new bin in spring.
Shred what you can. Whole leaves mat into slicks, thick prunings hold their shape for years, and a single square of cardboard dries into a wall. A shredder or even a violent pass with a mower over a tarpful turns slow material into fast material.
Coffee is a green: Used grounds read brown and dry but behave green, and they are free in quantity. Pizzeria and cafe grounds will convert a struggling cold heap into an active one.
Keep greens and browns as separate stocked supplies. Heap speed comes from mixing two ready streams, not from scraps alone.
Build the first heap as a recipe
Start with a knee-high layer of coarse, twigy material. It forms a breathing floor that keeps the wet heap above it from sealing to the ground.
Then alternate. One layer of greens, two or three of browns by volume, with each layer watered as it goes. Squeeze-test thinking applies: the finished pile should feel like a wrung-out sponge, never dripping and never dusty.
Cap the heap with a blanket of browns. The dry top layer hides the food smell from flies, sheds excess rain, and looks like mulch rather than a bin of scraps.
Assemble the full target volume within two or three days if running hot. Microbes need the whole pile insulated by its own mass; a hot heap built one bucket at a week over a month never catches.
The starter handful: A spade of finished compost or a forkful of active manure mixed into the first layers inoculates a new heap with the working biology. It is optional, but it is also the difference between days and weeks of waiting.
Layer coarse base, greens, browns, water, brown cap, and build the volume in days not months. The first heap sets the pattern every later one follows.
The weekly air and moisture loop
After the first heat-up, a hot heap lives on a ten-minute weekly loop: turn for air, squeeze for moisture, adjust whichever is short. That is genuinely all the science asks.
Turning rebuilds the oxygen the centre just consumed, mixes compacted layers and redistributes heat from core to edges. A garden fork through several plunges works on an open bin; a tumbler gets its full rotation.
A cool, dry centre means the pile is thirsty: water while turning. A sour, wet smell with a dark centre means it is drowning: add shredded browns aggressively and open the sides for air.
A long-stem thermometer settles arguments. A hot heap runs best between roughly fifty and sixty-five degrees at the core. Under forty, the pile runs slow but accepts new material without complaint. Over seventy, turn it now, because the useful microbes are cooking.
Cold heap version: Running cold? The same loop still applies, just monthly. One turn and a moisture check every month or two takes a year-old pile from compacted mulch to finished compost noticeably sooner.
Turn weekly, squeeze-test every turn, and fix dryness with water and wetness with browns. The routine is ten minutes, and it is the whole difference between months and years.
The short no-list, defended
Meat, fish, dairy and oily food belong to industrial composting, not the home heap. They breed the smell and the vermin that ends neighbourhood composting.
Pet waste and cat litter can carry pathogens a home heap cannot reliably kill. Diseased plant material, especially on fruit and potato crops, seeds next year's outbreak through the finished compost. Keep both out.
Glossy and coloured printed papers carry inks and coatings you do not want in food-bed soil. Treated timber offcuts, synthetic grass clippings and so-called compostable plastics bring their own slow poisons or persistent fragments.
Weedy seed heads and creeping perennial roots only belong in a heap that demonstrably ran hot through their layer. A cold heap stores bindweed like a bank, and withdraws it in spring across every bed you mulch.
Citrus and onion moderation: Citrus peels and onion scraps are fine in normal amounts, but a heap of pure citrus rind acidifies slowly and deters the worms. Spread them across the greens and bury them in browns.
Keep out animal products, pet waste, diseased plants, treated or glossy material and any weed that a cool heap might survive. The no-list protects both the heap and its reputation.
Knowing when it is done, and using it well
Finished compost is dark, crumbly and smells like a woodland floor. The original ingredients should be unrecognisable, though a few twigs or nutshells passing through is honest, not failure.
Stop feeding a hot heap once you want the crop. Let the pile cool and mature for a few weeks; immature compost can temporarily tie up nitrogen and carry compounds that stall seedlings.
Screen through a simple mesh or a pallet grate. The fine fraction feeds the beds; the coarse leftovers are the best possible starter inoculant for the next heap. Nothing wasted.
Use it as a soil conditioner, not a potting medium. A two-to-three-centimetre blanket worked onto beds each season, or a scoop into each planting hole, returns the nutrients the crops borrowed. More than that is a habit, not a benefit.
The winter test of patience: A cold heap in winter looks dead and is merely slow. Do not dig it apart on a frosty morning looking for heat; give it a spring watering and a first turn, and watch the core light within a week or two.
Harvest when it looks and smells like soil, cure a few weeks after the heat ends, screen the coarse back into the new heap, and feed beds thin rather than thick.
Common compost materials, sorted
| Material | Class | Prep | Notes |
|---|---|---|---|
| Fruit and vegetable scraps | Green | Chop large pieces | The everyday engine of the heap |
| Coffee grounds and filters | Green | None | Free in quantity; worms love them |
| Fresh grass clippings | Green | Dry slightly, thin layers | Thick wet slabs mat and stink |
| Dry leaves | Brown | Shred for speed | Store autumn surplus for spring |
| Cardboard and paper (plain) | Brown | Shred or tear, soak lightly | No glossy or printed-heavy stock |
| Straw and hay | Brown | Cut into lengths | Seed-free hay avoids a weed harvest |
| Small twigs and prunings | Brown | Shred or chip | Best as the coarse base layer |
| Wood ash (cold only, sparse) | Neutral | Light dustings | Raises pH; never with sawdust |
Volumes, not weights, set the one-to-two-or-three green-to-brown rhythm. A heap that smells is short on browns; a heap that does nothing is short on greens or water.
Key terms
- Greens
- Nitrogen-rich, soft, wet materials like food scraps, coffee grounds and fresh growth that fuel microbial heat.
- Browns
- Carbon-rich, dry, structured materials like leaves, straw and shredded cardboard that hold air and absorb moisture.
- Hot composting
- Building a full, balanced pile that self-heats to roughly 50 to 65 Celsius and finishes in a few months with weekly turning.
- Cold composting
- Adding material as it arrives with minimal tending; it finishes in a year or more but costs almost no effort.
- Curing
- The post-heat maturation period where a cooled heap settles chemically so it becomes safe for seedling roots.
- Leachate
- The dark liquid that drains from an over-wet heap; odorous and strong, best re-soaked into browns rather than poured out.
Tips and common mistakes
Field-tested tips
- Keep a bucket of dry browns beside the bin. Every green caddy emptied gets a two-handled scoop of browns over it; that single habit kills fruit flies and smell.
- Chop kitchen scraps smaller with a spade against the bin floor. Surface area is free speed.
- Name each heap. Starting a new pile at the good spot and letting the old one cure beside it beats digging unfinished compost out of the middle.
- In dry spells water the heap like a garden. A core that has gone to dust has simply paused, and both a soaking and a turn restart it.
Common mistakes
- Composting kitchen waste alone, with no browns stored, and running a permanently sour, soggy heap.
- Buying a tumbler then filling it one scrap tray at a time; no volume, no heat, no finished compost.
- Adding meat and dairy 'just this once' and training rats that your garden has open Thursdays.
- Never turning at all, then blaming the bin when a year-old heap is still recognisable as last autumn's leaves.
Frequently asked questions
How long does compost take to be ready?
A properly built hot heap, turned weekly, can finish in eight to twelve weeks including a short cure. A cold heap that only gets material added takes twelve months or more. The difference is almost entirely volume, balance and air. If speed matters, the hot route with a stocked brown supply is the one that delivers it.
My compost smells rotten. What did I do wrong?
A rotten or sour smell almost always means too wet and too compacted, with not enough browns or air. Stop adding greens, mix in a large volume of shredded dry material, and turn the heap thoroughly with the sides open for a week. The smell should drop within days. If it persists, find the waterlogged core and rebuild it into a fresh, balanced pile.
Can I compost in winter?
Yes, though everything slows with cold. Keep the heap insulated with a thick brown cap or an old carpet, feed it smaller amounts of greens buried deep, and turn on milder days. A large hot heap can hold heat through winter; a small tumbler will sleep until spring. The scraps do not stop, so the bin should not either.
Do I really need a compost bin or tumbler?
You need containment and access more than you need a product. An open pallet bay or a tidy heap in a corner works if it holds moisture and stays tidy enough to keep tending. A bin helps mostly with looks, pests and moisture control, and a tumbler helps most where space is small and waste is mostly kitchen. Choose after method, not before.
What is the fastest way to fix a dead, doing-nothing heap?
Diagnose in order: dryness first, then nitrogen, then air. Probe the centre; if dusty, soak it while turning. If damp but inert, mix in generous greens such as grass or coffee grounds plus a spade of finished compost or manure as starter. If wet and dense, add shredded browns and open it up. A rebalanced heap usually lights within a week of the fix.
Is garden compost as good as bought compost?
For feeding beds, better, because it carries your own soil's biology and costs nothing beyond effort. Bought compost is consistent and weed-free; home compost varies with its feedstock and may pass a few tough seeds or twigs. Neither difference matters much as a bed mulch. As a seed-raising medium, neither is suitable straight; use a proper sterile mix.
About this checklist
- Prepared by
- Spare Theory editorial · research-based
- Last checked
- 2026-10-16
How we choose what earns a spotWe structure the setup sequence and the greens-to-browns, moisture and turning guidance around published home-composting practice from extension services and horticultural bodies. Temperature ranges and timings are marked indicative for typical climates. We state no prices, endorse no brand, and defer feedstock-specific questions such as diseased material disposal to local guidance.
Reference basisLand-grant university cooperative extension guidance on home compostingEnvironmental agency guidance on backyard composting and acceptable feedstocksRoyal Horticultural Society composting method guidance