Can I Compost Old potting soil?
Yes
Old potting soil can be composted.
What to Know
- Old potting soil can be composted, but it may contain depleted nutrients and possibly synthetic fertilizers
- It's best to mix it with other compost materials rather than adding it to your pile in large quantities
Tips
- Break up any clumps before adding to your compost
- Mix thoroughly with other compost materials to ensure even distribution
- If the potting soil contained diseased plants, it's better to discard it rather than compost it to prevent spreading plant diseases