Manufactured from raw materials, consisting of a minimum of 50% sphagnum peat, wood fiber and lime to adjust the pH. The peat content provides a combination of superior root penetration, good drainage and aeration while the wood fibers strengthen the pot, and they are 100% biodegradable. The pots can be planted ‘pot ‘n all’ resulting in zero transplant shock at the time of transplanting. OMRI Listed.