Layering
Carbon-Nitrogen Layering in a Backyard Compost Bin
How to alternate brown and green materials to create the right conditions for efficient decomposition.
Read article →
Composting in Canada
Backyard Compost Layering and Green Bin Rules
From carbon-nitrogen ratios to municipal curbside organics lists — straightforward information for Canadian households managing their own compost or using green bin programs.
Carbon-Nitrogen Guide
Articles
What to Read
Three focused topics covering the core mechanics of backyard composting and municipal organics diversion in Canada.
Moisture
Moisture Targets for Backyard Composting
Understanding how water content affects decomposition speed and how to adjust it through the seasons.
Read article →
Municipal Programs
Canadian Green Bin Acceptance Rules by City
What goes in the curbside green bin and what stays out — a city-by-city look at organics acceptance lists.
Read article →The Carbon-Nitrogen Balance
A functional compost pile requires a ratio of roughly 25–30 parts carbon to 1 part nitrogen by weight. Straw, cardboard, and dried leaves supply carbon; kitchen scraps, grass clippings, and fresh plant cuttings supply nitrogen. When the ratio is off, decomposition slows or the pile begins to smell.
Moisture and Aeration
Organic material breaks down fastest when it holds moisture similar to a wrung-out sponge — damp but not dripping. Turning the pile every two to four weeks introduces oxygen, which supports aerobic bacteria and keeps odours minimal. In dry Canadian summers, covering the pile or adding water may be necessary.
Curbside Organics Programs
Most large Canadian municipalities operate a green bin or organics collection program. Acceptance lists vary: some cities accept cooked food, meat, and soiled paper; others restrict what can go in. Checking the municipality's current guidelines before placing materials at the curb prevents contamination.