A fast-growing perennial plant of the borage family, comfrey’s thick and tuberous roots create an expansive root system, allowing the plant to “mine” compacted soils for minerals and other nutrients which are often difficult for other plants to obtain. comfrey leaves make an excellent fertilizer, and provide a nutrient boost to compost mixes. Additionally, comfrey leaves are used as a green manure and mulch, being cut, then spread over planting beds and left to decompose on site, further helping to condition soils.
A liquid fertilizer can also be made from the comfrey plant by “steeping” chopped comfrey leaves in water for several weeks (placing a rock or other heavy item on the leaves to keep them submerged) until they form a dark, thick liquid. The liquid should be diluted 12:1 – 15:1 prior to application.Comfrey is used to treat wounds and reduce the inflammation associated with sprains and broken bones. The roots and leaves contain allantoin, a substance that helps new skin cells grow, along with other substances that reduce inflammation and keep skin healthy. Comfrey ointments were often applied to the surface of the skin to heal bruises as well as pulled muscles and ligaments, fractures, sprains, strains, and osteoarthritis. Comfrey should never be eaten as toxic.