Courses
Environment & climate Ideas & discovery

How to start composting at home

Set up a compost pile or bin that breaks down without smells or pests.

Start with what composting needs, carbon-rich browns, nitrogen-rich greens, air and water, then choose a method that fits your space, from a garden pile to a worm bin or a local collection scheme. Each step comes with a check for when something goes wrong.

Download Cadence on the App Store
Start with three things you can do today

Type this when Cadence asks what you want to learn

I want to start composting my food scraps and garden waste at home. I have a small garden and I am worried about smells, rats and getting it wrong, so I would like to understand how composting works before I buy a bin.

Change any word so it fits your situation. The course is built from what you type and a few setup questions.

Start today

Four things you can do before the course exists.

Useful on their own. The course is for when you want the whole skill, not just the first move.

  1. Get the mix right

    By volume, add two to three times as much brown material, such as dry leaves or shredded plain cardboard, as green material, such as fruit and vegetable scraps. Bury each batch of scraps under about 10 to 20 centimetres of browns to deter pests.

  2. Do the sponge test

    Squeeze a handful from the middle of the pile. It should feel like a wrung-out sponge. If it is dry, activity slows: add water and turn it. If it is soggy and smells, add more browns and turn it to let air in.

  3. Keep these out of a home pile

    Leave out meat, fish, bones, dairy, fats and oils, pet waste, diseased plants and weeds with seeds. If you have no garden, check whether your council or city collects food waste or runs a drop-off point.

  4. Know when it is ready

    Finished compost is dark, crumbly and smells like soil, with no recognisable food scraps. A well maintained pile takes roughly three to five months; a neglected one can take a year. Let it cure for at least four weeks before using it.

Sources: US EPA: composting at home, ingredients, ratios and troubleshooting. Practical examples are starting points, not promised results.

Best for
Environment & climate
Prerequisites
None. Bring the situation you have.
Course length
7 to 30 lessons, sized to your goal
Lesson pace
About 10 minutes a day
Format
Read it, or play the audio
Access
Available on the App Store, with early features and Android testing access

Before the course is built

Setup asks about your situation first.

Lesson 1 opens on the moment you describe, and the examples use your role. For this request, expect questions like these.

  1. How much outdoor space do you have: a garden, a balcony, or none?
  2. What would you compost most: kitchen scraps, garden waste, or both?
  3. What worries you most about starting: smells, pests, effort, or space?

Right for now

If any of this sounds familiar, start here.

You throw scraps away and feel bad about it

And want to do something better with them.

You garden

And want to make your own soil improver.

You tried once and it went slimy

Or smelly, and you gave up.

Course arc

Where the course goes, in order.

Cadence writes the lessons for you, so the exact path follows your answers. This is the ground a course built from this sentence covers.

01 / 06

How composting works

Microorganisms, carbon, nitrogen, water and air.

Browns and greens

What to add, what to leave out and why.

Choosing a method

Open piles, enclosed bins, tumblers, worm bins and collection schemes.

Building and maintaining

Layering, moisture, turning and covering scraps.

Troubleshooting

Smells, a cold pile, flies and rodents.

Using finished compost

How to tell it is ready and where it helps in the garden.

What changes

What you will be able to do, and what you will stop believing.

You will be able to

Understand the process

Explain what microorganisms need to turn scraps into compost.

Choose a method

Pick a pile, bin, tumbler, worm bin or collection scheme that suits your space.

Fix common problems

Diagnose a pile that smells, stays cold or attracts pests.

Ideas this course corrects

Composting always smells

A balanced pile should smell earthy. A bad smell usually means it is too wet or short of air, which more browns and turning can fix.

Everything organic can go in a home pile

Meat, fish, dairy and greasy food can attract animals, and home piles often do not get hot enough to break them down fully.

Course questions

What to know before you start.

How to start composting at home: what can I do today?

Get the mix right. By volume, add two to three times as much brown material, such as dry leaves or shredded plain cardboard, as green material, such as fruit and vegetable scraps. Bury each batch of scraps under about 10 to 20 centimetres of browns to deter pests. Do the sponge test. Squeeze a handful from the middle of the pile. It should feel like a wrung-out sponge. If it is dry, activity slows: add water and turn it. If it is soggy and smells, add more browns and turn it to let air in. Keep these out of a home pile. Leave out meat, fish, bones, dairy, fats and oils, pet waste, diseased plants and weeds with seeds. If you have no garden, check whether your council or city collects food waste or runs a drop-off point. Know when it is ready. Finished compost is dark, crumbly and smells like soil, with no recognisable food scraps. A well maintained pile takes roughly three to five months; a neglected one can take a year. Let it cure for at least four weeks before using it.

Is this a fixed course?

No. Cadence builds the course when you type the sentence and answer a few setup questions, so the lessons follow your situation. This page describes what a course built from this request covers. You see the whole path before Lesson 1.

Who is this course for?

Start with what composting needs, carbon-rich browns, nitrogen-rich greens, air and water, then choose a method that fits your space, from a garden pile to a worm bin or a local collection scheme. Each step comes with a check for when something goes wrong. It sits under Environment & climate in the Ideas & discovery part of the library.

Do I need any prior experience?

No. Setup asks what you already know and where you want to use it, and the course starts from there. Bring a real situation if you have one; the examples are built around it.

How long does it take?

Courses run 7 to 30 lessons of about 10 minutes, sized to what you asked for. One lesson a day is the intended pace, and you can go faster. Lessons can be read or played as audio.

Does this course award a certificate or degree?

No. Cadence is for practical self-learning and does not award accredited degrees or professional certification.

Start today

Type it, answer a few questions, open Lesson 1.

The sentence to type

I want to start composting my food scraps and garden waste at home. I have a small garden and I am worried about smells, rats and getting it wrong, so I would like to understand how composting works before I buy a bin.
Download Cadence on the App Store

Android early access

Join Cadence on Android.

Tell us your goal and Google Play email. We will send your tester invite when it is ready.

Use the email on the Google account you use with Google Play. We only use it for your tester invite and Android testing updates.