Composting 101: The Ideal Brown-to-Green Ratio for Perfect Compost

Great compost isn't luck—it's balance. While tossing any organic matter eventually works, the right mix of "brown" (carbon-rich) and "green" (nitrogen-rich) materials creates fast, odor-free, nutrient-dense compost.

The Golden Ratio

40% brown to 60% green (roughly 1:3). Too much brown cools the pile, slowing decomposition. Too little causes overheating and odors. If the pile cools excessively, add grass clippings or coffee grounds to reactivate it.

Best Brown Materials

• Paper & cardboard: Shred first. Avoid glossy/colored inks (potential heavy metals).
• Sawdust: From untreated wood.
• Sticks & twigs: High carbon, slower to break down—chop small.
• Wood ash: Cool completely first. Use sparingly (alkaline).

Preparation Tips

Shred or chop everything. Smaller pieces = more surface area = faster microbial action. Brown material bulks the pile, absorbs excess moisture, and reduces smells. Don't skip it!