These Peat Pots are made from Canadian sphagnum peat moss and wood pulp, allowing plant roots to naturally air prune as they grow through the pot, enhancing root development. These Peat Pots are made from Canadian sphagnum peat moss and wood pulp, allowing plant roots to naturally air prune as they grow through the pot, enhancing root development. An easy, all-natural solution to seed starting and transplanting, these pots are biodegradable and composed of vital plant nutrients. All you have to do is bury the plant and pot together and the pot will degrade on its own. Transplanting has never been easier.