Herbs · Handle with care

Comfrey

Symphytum officinale · also called Knitbone, Boneset (old name) · planet: Saturn

A big, bristly perennial with deep roots, drooping bell flowers in purple, pink or cream, and leaves that make a rich garden feed.

In the garden

Sun to part shade, deep moist soil. Its roots go very deep and mine nutrients; cut the leaves, wilt them and add to the compost heap or soak them in water for a smelly plant food.

Take care

• Do not eat or drink comfrey in any form. It contains compounds that can seriously damage the liver.
• Do not use on broken skin or while pregnant or nursing.
• Treat as a garden plant, compost activator and bee plant only.

Folklore and garden information only, not medical advice. Do not eat or use any plant unless you are certain what it is and that it is safe for you. Ask a doctor or pharmacist first, especially if you are pregnant, nursing, on medicine, or choosing for children or pets.