Compost is the cheapest and best amendment your garden will ever get. The bin you build matters less than the habit of using it consistently. Here are simple DIY bins that fit any budget, plus the basics of making compost that actually breaks down.
What a compost bin needs
- Air flow — aerobic compost works fast and doesn’t smell.
- Moisture control — keep it as wet as a wrung-out sponge.
- Access — to add scraps and to turn or harvest finished compost.
- Volume — 3×3×3 feet is the sweet spot for hot composting.
Pallet bin
The classic. Four pallets wired together create a free, attractive bin.
- Use 4 pallets stamped HT (heat-treated, food-safe).
- Connect with zip ties or galvanized wire.
- Optional: hinge the front pallet for easy access.
Trash can bin
Drill holes in a 32-gallon trash can with lid for a tidy patio compost bin.
Air holes
- Drill 1/2-inch holes every 6 inches around the sides and bottom.
- The lid keeps animals out.
Turning compost
- Roll the can on its side every week to mix.
- This is the easiest way to turn compost without a fork.
Other simple options
- Wire ring: 10 feet of welded wire bent into a circle. Free-form and effective.
- Tumbler from a barrel: a closed barrel mounted on an axle for fast spinning.
- Worm bin: for kitchen scraps, perfect for apartments and small homes.
- Trench composting: dig a hole, bury scraps, plant on top.
Composting tips
- Aim for 3 parts brown (dry leaves, paper) to 1 part green (kitchen scraps, grass).
- Chop scraps small to speed decomposition.
- Turn weekly for hot compost; every few weeks for cold compost.
- Skip meat, dairy, and pet waste in home bins.
Practical tips
- Keep a small countertop kitchen pail with a charcoal filter.
- Run a multi-bin system: one filling, one cooking, one finishing.
- Compost is ready when it smells like forest soil and you can’t recognize the scraps.
FAQ
How long does compost take? Hot, well-managed bins finish in 2–3 months. Cold piles take 6–12 months.
Why does my compost smell bad? Too wet or too much green. Add brown material and turn it.
Conclusion
A simple compost bin pays you back many times over: free fertilizer, less landfill waste, and richer soil. Pick the bin that fits your space and start tossing scraps. For broader habits, see our gardening hacks pillar.