Browns
These high-carbon materials decay very slowly, can help keep compost piles aerated, and tend to accumulate in the fall.
Examples of browns include:
- Leaves (30-80:1)
- Straw (40-100:1)
- Paper (150-200:1)
- Sawdust 100-500:1)
- Animal bedding mixed with manure (30-80:1)
Since browns will tie up nitrogen in the soil if not fully composted, you may need to stockpile browns until they are needed to mix with greens.