The Temperate Database is in the process of being updated, with new records being added and old ones being checked and brought up to date where necessary. This record has not yet been checked and updated.
Cynanchum japonicum is a Perennial Climber up to 0.60 metres tall.
It has medicinal uses.
There are some reports of toxins in this genus[
E. Asia - Japan.
Thickets and grassy slopes near seashores, C. and S. Japan[
We have very little information on this species and do not know if it will be hardy in Britain, though judging by its native range it could succeed outdoors in many parts of this country. It probably does not have any special cultivation requirements and will probably succeed in most soils in a sunny position[
The plant is antitussive and expectorant[
]. (The part of the plant used is not specified.) A decoction is used in the treatment of lung congestion, fullness of chest and sides, shortness of breath and rasping throat[
Seed - sow spring in the greenhouse. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts.
Division in spring.