Ginseng, Chinese ginseng

Panax ginseng

Physical Characteristics

Panax ginseng is a PERENNIAL growing to 0.8 m (2ft 7in) by 0.7 m (2ft 4in). See above for USDA hardiness. It is hardy to UK zone 6. The species is hermaphrodite (has both male and female organs). Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in full shade (deep woodland) or semi-shade (light woodland). It prefers moist soil.

Distribution

E. Asia - China, Korea.

Habitats

Woodland Garden Shady Edge; not Deep Shade;

Edible Uses

Edible Parts: Root Edible Uses: Tea Root - chewed. This probably refers to its medicinal uses. A tea is made from the root.

Medicinal Uses

Adaptogen Antianxiety Anticholesterolemic Appetizer Emetic Expectorant Hypoglycaemic Nervine Tonic Ginseng has a history of herbal use going back over 5,000 years[238]. It is one of the most highly regarded of herbal medicines in the Orient, where it has gained an almost magical reputation for being able to promote health, general body vigour and also to prolong life[218]. The root is adaptogen, alterative, carminative, demulcent, emetic, expectorant, stimulant and tonic[165, 176, 178, 218]. It both stimulates and relaxes the nervous system, encourages the secretion of hormones, improves stamina, lowers blood sugar and cholesterol levels and increases resistance to disease[238]. It is used internally in the treatment of debility associated with old age or illness, lack of appetite, insomnia, stress, shock and chronic illness[238]. Ginseng is not normally prescribed for pregnant women, or for patients under the age of 40, or those with depression, acute anxiety or acute inflammatory disease[238]. It is normally only taken for a period of 3 weeks[238]. Excess can cause headaches, restlessness, raised blood pressure and other side effects, especially if it is taken with caffeine, alcohol, turnips and bitter or spicy foods[238]. The roots are harvested in the autumn, preferably from plants 6 - 7 years old, and can be used fresh or dried[238]. A dose of 10ug/ml of ginseng saponins has been shown to be significantly radio-protective when it is administered prior to gamma-irradiation[218]. The leaf is emetic and expectorant[218]. The German Commission E Monographs, a therapeutic guide to herbal medicine, approve Panax ginseng for lack of stamina (see [302] for critics of commission E).

Known Hazards

Side effects include inability to fall asleep, increase in heart rate and blood pressure. Overuse or prolonged use may cause over stimulation (diarrhoea, nervousness, skin eruption). Caution with other stimulants needed. Avoid in patients with psychosis and manic disorders. Not recommended during pregnancy and breast feeding [301].