PlainHarvest
Home Composting ยท Canada

Turning kitchen scraps and yard waste into garden compost

Practical reference notes for households across Canadian climate zones, covering bin selection, the balance of nitrogen-rich and carbon-rich material, moisture control, and what to do when a pile stalls over a long winter.

A black enclosed domestic compost bin standing in a backyard
A closed domestic compost bin, a common backyard format. Photo: Wikimedia Commons.

Three decisions that shape a backyard pile

Most home composting questions trace back to container, feedstock balance, and moisture. The notes below summarise how each one behaves through a Canadian year.

Container choice

Enclosed bins hold heat and deter wildlife, open piles turn easily, and tumblers speed mixing in small yards. The right format depends on space, local animals, and how often a pile will be turned.

Greens and browns

Nitrogen-rich greens such as vegetable trimmings sit alongside carbon-rich browns such as dry leaves and shredded paper. The working ratio is closer to volume than to weight, and it shifts with the seasons.

Moisture and air

A pile that feels like a wrung-out sponge decomposes steadily. Too wet turns sour and compact, too dry stalls. Turning reintroduces air that aerobic microbes depend on.

Reference articles

Each note focuses on one part of the process, with specifics that apply to Canadian gardens and winters.

A wooden slatted garden compost bin holding partly decomposed material
Bins

Choosing a Compost Bin

How enclosed bins, open piles, tumblers, and wire mesh formats compare for backyard use, and what wildlife and bylaw considerations matter in Canada.

Read the article
A bowl of mixed kitchen scraps collected for composting
Balance

Greens and Browns Balance

What counts as a green or a brown, how to judge the mix by feel rather than fixed numbers, and how to stockpile autumn leaves for the year ahead.

Read the article
An outdoor compost heap with layered organic material
Troubleshooting

Cold-Weather Composting

Why a pile slows or freezes through a Canadian winter, how to keep activity through the cold months, and how to read common odour and pest problems.

Read the article

Common household materials, sorted

A quick orientation on frequent kitchen and yard materials. When local collection rules differ, the municipal program takes priority.

MaterialCategoryNotes for home piles
Vegetable and fruit trimmingsGreenBreak larger pieces down so they decompose evenly.
Coffee grounds and paper filtersGreenGrounds add nitrogen; the filter counts as a brown.
Dry autumn leavesBrownShredding speeds breakdown and prevents matting.
Shredded uncoated paper and cardboardBrownUseful for soaking up excess moisture.
Meat, dairy, and oily foodAvoid at homeDraws pests and creates odour in backyard bins.

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