Consumers see words like compostable and biodegradable on everyday products, but these terms are not the same. At Dakota Prairie Composting, understanding these differences helps reduce contamination and supports higher-quality finished compost.
WHAT “COMPOSTABLE” AND “BIODEGRADABLE” REALLY MEAN
Compostable materials are engineered to break down fully and safely in a composting environment, especially industrial facilities with controlled temperatures.
Biodegradable means an item can break down over time, but conditions and timelines vary widely. Many biodegradable plastics do not break down in compost systems and can contaminate finished material.
Compostable:
- Breaks down into nutrient-rich soil
- Uses high heat for a predictable breakdown timeframe
- Leaves no toxic residue
- Certified and tested
- Designed specifically for composting systems
Biodegradable:
- Breaks down eventually
- Uncertain timeframe
- May leave microplastics
- Not regulated or certified
- Not designed for compost facilities
COMMON MISCONCEPTIONS
- Biodegradable does not mean compostable
- Plant-based does not mean compostable
- The long-term breakdown of biodegradable materials does not work in compost systems
SORTING GUIDE
Proper sorting helps prevent contamination, improve compost quality, and support community sustainability efforts.
Compost:
- Food scraps
- Food-soiled paper products
- Yard waste
- Certified compostable products
- And more!
Keep Out:
- Biodegradable items
- Plastic-lined plates
- Foil-lined packaging
- Non-certified plant-based plastics
- See the full list here!
