How to Start Composting at Home in Australia: A Beginner’s Guide
Composting is one of the highest-impact things you can do at home for the environment. Around 50% of the average Australian household's waste stream is organic material — food scraps, garden trimmings, paper — all of which could become compost rather than methane-producing landfill.
The barrier for most people isn't knowledge — it's getting started. This guide walks you through everything you need to set up your first compost system, step by step.
Why composting matters
When organic waste goes to landfill, it breaks down without oxygen in an anaerobic process that produces methane — a greenhouse gas with over 80 times the warming potential of carbon dioxide over a 20-year period. Composting the same material at home produces carbon dioxide instead (far less damaging), and creates a valuable soil amendment in the process.
Home composting also reduces the amount of waste your council needs to collect and process, extends the life of landfill infrastructure, and — if you garden — produces free fertiliser for your plants.
Choosing the right composting method
The right system depends on your living situation:
| Method | Best for | Space needed | Time to compost |
|---|---|---|---|
| Outdoor compost bin | Houses with gardens | Small backyard corner | 3–12 months (cold) or 8–16 weeks (hot) |
| Tumbler compost bin | Houses, faster results | Small outdoor space | 6–10 weeks |
| Worm farm | Apartments, small households | Bench or balcony | Ongoing (harvest regularly) |
| Bokashi system | Apartments, meat/dairy composters | Kitchen bench | 2–4 weeks (fermentation) |
| FOGO bin | Renters, apartments | No extra space | Done by council |
Check out our Get a Grip on Composting Workbook. It's a go-to digital guide written specifically for those who want to start composting confidently at home.
The golden rule: greens and browns
Successful composting relies on balancing two types of material:
- Greens (nitrogen-rich): Fresh food scraps, lawn clippings, coffee grounds, tea bags (compostable ones), fresh plant trimmings. These provide nitrogen and moisture.
- Browns (carbon-rich): Dry leaves, cardboard, newspaper, paper bags, dried garden waste, straw, paper egg cartons. These provide carbon and structure.
Aim for roughly a 3:1 ratio of browns to greens by volume (not weight). Too many greens makes a wet, smelly pile. Too many browns slows everything down. Most beginners err on the side of too many greens — always have a supply of torn cardboard or dry leaves nearby.
@lottiedalziel It's all about the balance 🐛 #compost #composting #gogreen #sustainability #sustainableliving #gogreen #ecofriendly ♬ original sound - Lottie Dalziel🌏Sustainability
Setting up your first compost bin: step by step
- Choose your location. Place your bin on bare soil if possible — this allows worms and microorganisms to enter from below. Partial shade is ideal; direct sun all day can dry the pile out too quickly.
- Start with a brown layer. Add a 10–15cm layer of brown material (torn cardboard, dry leaves) at the base. This promotes drainage and airflow.
- Add your first food scraps. Add kitchen scraps on top. Cover immediately with more browns. The 'bury it' approach keeps pests away and reduces odours.
- Keep it moist. The pile should feel like a wrung-out sponge — damp but not dripping. Water lightly if it dries out; add more browns if it becomes waterlogged.
- Turn regularly. Every 1–2 weeks, mix the pile with a garden fork to introduce oxygen. This speeds up decomposition significantly.
- Harvest your compost. Finished compost looks dark, crumbly, and smells like earth. Sieve out any large uncomposted pieces (put them back in the pile) and use the rest in your garden.
What to compost and what to avoid
Yes to compost
- Fruit and vegetable scraps (including citrus in moderation)
- Coffee grounds and paper coffee filters
- Tea leaves and compostable tea bags
- Eggshells
- Lawn clippings and garden trimmings
- Cardboard, newspaper, and paper (torn into pieces)
- Dry leaves
For a full breakdown, see: What Can You Compost? A Complete Australian Guide
Avoid or be cautious
- Meat, fish, and dairy (attracts pests in open bins — fine in bokashi or sealed tumblers)
- Diseased plants (can spread disease through the pile)
- Pet waste (contains pathogens)
- Glossy paper and coated cardboard
- Plastic, glass, and metal
Learn what to avoid in our guide: What Cannot Go in Compost? Common Mistakes to Avoid
Frequently Asked Questions
How long does composting take?
It depends on the method. Hot composting can produce finished compost in 6–10 weeks with regular turning. Cold composting (passive) takes 3–12 months. Worm farms produce castings continuously and can be harvested every few months.
Do I need a garden to compost?
No. Worm farms and Bokashi systems work perfectly in apartments, on balconies, or even in kitchen cupboards. See our guides on apartment composting and worm farming for more details.
What do I do if my compost smells bad?
A smelly pile is usually caused by too many greens (not enough carbon) or too much moisture. Add torn cardboard or dry leaves, mix the pile to introduce oxygen, and ensure it has drainage. A pile that smells like ammonia needs more browns; a pile that smells like rotten eggs needs more aeration.
Can I compost citrus?
Yes, in moderation. Citrus breaks down more slowly and can slow worm activity, but it's perfectly fine in an outdoor compost bin. Avoid adding large quantities all at once.
Do I need to buy anything to start composting?
You can start with a simple open pile or a DIY bin made from pallets. Commercial bins make the process easier, but aren't required. The main thing you need is a steady supply of food scraps and brown material.