Organic matter high in carbon — what composters commonly call browns — provides energy for decomposer organisms as they consume and break down the contents of your compost pile. Organic matter high in nitrogen — called greens — supplies the decomposers with protein. Maintain well-fed composting organisms with these varied ingredients.
| Browns | Greens |
|---|---|
| Dry leaves | Kitchen scraps |
| Woody plant trimmings | Coffee grounds and filters |
| Straw | Leafy plant trimmings |
| Pine needles | Grass clippings |
| Sawdust | Manure |
| Paper products | Feathers, fur, and hair |