Why We Don't Recommend Compost Tumblers

Compost tumblers are popular for a reason. They seem tidy, and the promise of turning your compost with a simple crank is appealing. However, I often guide people toward on-the-ground bins or simple piles for creating the best quality compost.

The primary issue with tumblers is their lack of insulation. Because a tumbler is suspended, it loses the stable temperature and moisture provided by contact with the earth. This exposure causes the contents to dry out very quickly. The microbes responsible for decomposition need steady moisture and warmth to work effectively. When their environment is too dry or fluctuates with the daily temperature, the composting process slows dramatically.

This inconsistent decomposition means the material often doesn't break down fully. Instead of the fine, dark, soil-like material we're working towards, the end result from a tumbler is frequently coarse and woody. It is closer in texture to a rough mulch than a finished compost ready to enrich your garden soil.

While any composting method is a step in the right direction, a simple bin or pile on the ground often yields a superior product by creating a more stable environment for decomposition.

Happy composting!