Prefers a well-drained loamy soil, rich in organic matter, in sun or semi-shade. Succeeds in ordinary garden soil. This species is not very hardy in Britain, tolerating temperatures down to about -5°c. Most species in this genus have malodorous flowers that are pollinated by flies.

Leaves - cooked. It is said that the leaves of this species are not poisonous but caution is advised.

Seed - best sown in a greenhouse as soon as it is ripe in the autumn. Pre-soak stored seed for 48 hours in hand-hot water and surface sow in a greenhouse. Germination usually takes place within 1 - 3 months at 20°c. Stored seed germinates better if it is given 3 months cold stratification at 5°c. When large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Plant out in late spring or early summer after the last expected frosts. Division in autumn. Root cuttings in winter.

Roadside thickets and meadows in lowland, C. and S. Japan and in China.