How to Buy Compost + Where to Buy Compost?
Main Types of Compost
- “Regular” compost. Sometimes called thermo-compost or aerobic compost but mostly just called “compost,” it’s made with a diversity of ingredients, including horses manure, mixed together in piles or long windrows. Those ingredients are broken down primarily by microorganisms.
- Worm compost (vermicompost). Similar to the above, but it’s worms that break down the ingredients (along with the bacteria inside their digestive systems). The important thing is the quality and diversity of materials being used and the quality of the whole process.
- Mushroom compost. It’s generally not great. Yes, it is organic matter, but 1) It’s probably been sterilized, killing the microorganisms, 2) The mushrooms that were grown on it took out a lot of the nutrients, and 3) If they were non-organic mushrooms, it may contain a fair amount of pesticide residue.