Prefers a light rich slightly alkaline soil that is not too dry, and a warm sunny position. Plants are intolerant of root disturbance, though they are fast-growing and can become invasive when well-sited. The young growth is extremely attractive to slugs, they have been known to destroy even mature plants.

Root - cooked. When boiled in two changes of water, it is said to be excellent eating. Leaves - cooked.

Seed - best sown in a cold frame as soon as it is ripe. The seed can also be sown in spring. Surface sow 2 - 3 seeds per pot in the spring in order to avoid transplanting. We have found that if transplanted when very small seedlings grow away without difficulty. Germinates in 1 - 3 months at 10°c. Plant out into their permanent positions whilst young. Basal cuttings in spring. Division in spring - very difficult because the plant dislikes root disturbance.

Hillsides and hilly places in China.