Bidens macrosperma Fisch.
Bidens messerschmidii Turcz. ex Ledeb.
Bidens multifida Desf.
Bidens pauciflora Poir.
Bidens parviflora ia an erect, branched annual plant usually growing 20 - 50cm tall, occasionally to 80cm[
The plant is harvested from the wild for local use as a medicine and probably also as a food.
E. Asia - eastern Russia, Mongolia, China, Japan, Korea.
Coastal and riverside precipices and rocks, sandy banks, rocky outcrops. Sometimes found as ruderales by stony fences, walls etc[
Succeeds in any moderately fertile moisture-retentive soil in full sun[
Young plants - cooked[
The plant is said to clear heat, detoxify, motivate blood circulation, and remove stasis. It is used in the treatment of conditions such as fever, coughing and sore throat in common cold; enteritis, diarrhoea, and appendicitis; infantile fever with convulsions; trauma, frostbite, itching skin rash, carbuncles and furuncles, or snake bites (for the latter applications it can also be used topically, by pulverizing the herb)[
Seed - sow early spring in a greenhouse and only just cover the seed. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in May.
Alternatively, a sowing in situ in mid to late spring can be tried.