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Habitat : Artemisia princeps is native to E. Asia – China, Japan, Korea.Grows in waste ground and thickets in lowland and low elevations, central and southern Japan.
Artemisia princeps is a perennial, very vigorous plant that grows to 1.2 meters. This species spreads rapidly by means of underground stolons and can become invasive. It bears small, buff colored flowers from July to November which are hermaphroditic, and pollinated by wind. The leaves are feather shaped, scalloped and light green, with white dense fuzz on the underside.
It is in flower from Jul to November, and the seeds ripen from Aug to November.
The flowers are hermaphrodite (have both male and female organs) and are pollinated by Wind.
The plant prefers light (sandy) and medium (loamy) soils and requires well-drained soil.The plant prefers neutral and basic (alkaline) soils..It can grow in semi-shade (light woodland) or no shade.It requires dry or moist soil and can tolerate drought.
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 should succeed outdoors in many parts of this country. This species spreads rapidly by means of underground stolons and can become invasive. The following notes are based on the general needs of the genus. Easily grown in a well-drained circumneutral or slightly alkaline loamy soil, preferring a warm sunny dry position. Established plants are drought tolerant. Plants are longer lived, more hardy and more aromatic when they are grown in a poor dry soil. Members of this genus are rarely if ever troubled by browsing deer.
Seed – surface sow from late winter to early summer in a greenhouse, making sure that the compost does not dry out. 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. Division in spring or autumn. Basal cuttings in late spring. Harvest the young shoots when about10 – 15cm long, pot up in a lightly shaded position in a greenhouse or cold frame and plant them out when well rooted. Very easy.
Leaves and young seedlings can be eaten raw or cooked. They can also be used in salads and soups after removal of the bitterness. The young leaves can be lightly boiled before being pounded and added to glutinous rice dumplings known as mochi to which they give a pleasant colour, aroma and flavour. Mugwort mochi can be found in many North American health food stores.
Leaves are used to treat eczema, itchy skin and excessive womb bleeding in China. The fuzz on the underside of the leaves is gathered and used in moxibustion in Japan. Its juice is effective at stopping bleeding, lowering fevers and purging the stomach of impurities. It can also be boiled and taken to relieve colds and coughs. The technique of treatment for cold (diaphoretic treatment) was called Yay (oneself)-su (pan)-maw (steam)-kare (to cause to do). The decocted mugwort was boiled in a large pan. The patient sitting near the hearth holds the pan. Patient’s head needs to be covered with a hood-like cloth (a blanket would be good), covering his/her face and the pan. Then the steam/vapor causes the patient to perspire. Sometimes the patient drinks the decoction to accelerate the process. The process lasts for 5 to 8 minutes depending upon the steam flow and condition of the patient. The patient perspires profusely. Ainu people used to treat venereal disease such as syphilis and gonorrhea with mugwort plants. Washing genitals with leaves and stems of mugwort or/and drinking the decoction were found to be effective for controlling such venereal diseases. Some eye diseases were treated with leaves of mugwort plant. Broiled leaves of the plant used to be attached to the eyelid of the affected eyes. Yomogi is highly recommended in all inflammatory conditions, especially asthma, hay fever and atopic dermatitis. In these cases, it should be used internally and put into the bath. It is safe to be used long term and should be used first to get the condition under control and then at any sign of a return of the condition. A recently rediscovered use of Yomogi is in the prevention and treatment of malaria. Travelers venturing to countries with malaria are now again at risk, as the traditional treatments are no longer working as effectively. Recent research and history reveals Yomogi is an excellent preventative which modern travelers should think about adding to their travel bag before heading to countries troubled with malaria. It can be used to stimulate the body whenever infection is a problem.
A. princeps is one of the varieties of mugwort used as moxa in Moxibustion, a traditional medical practice of China, Japan, Korea, Mongolia, Tibet, and Vietnam. An evaluation of the efficacy of the smoke and water extracts of the herb found that both preparations inhibited the growth of a specific line of breast cancer cells in vitro.
Known Hazards: Although no reports of toxicity have been seen for this species, skin contact with some members of this genus can cause dermatitis or other allergic reactions in some people.
Disclaimer:The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplements, it is always advisable to consult with your own health care provider
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