American ginseng

Panax quinquefolius is a herbaceous perennial plant. Its aromatic root resembles a small parsnip that forks as it matures. The plant grows 6 to 18 in (15 to 46 cm) tall, usually bearing three compound leaves (sometimes called "prongs"), each with three to five leaflets, 2 to 5 in (5 to 13 cm) long. Panax quinquefolius is sometimes confused with wild sarsaparilla (Aralia nudicaulis), another member of the ivy family (Araliaceae). The two species may be distinguished by their leaves. Panax quinquefolius has palmately compound leaves (with leaflets radiating from a single point) while Aralia nudicaulis has pinnately compound leaves (with leaflets arranged on either side of a central stalk).

Phytochemistry. Like Asian ginseng (Panax ginseng), American ginseng contains dammarane-type ginsenosides, or saponins, as phytochemicals.

Panax quinquefolius is native to the eastern United States and southeastern Canada. It is found primarily in the Appalachian and Ozark mountains of the United States where it prefers full shade environments in deciduous hardwood forests. It is introduced and cultivated in the Chinese provinces of Guizhou, Heilongjiang, Jiangsu, Jiangxi, Jilin, and Liaoning.

Panax quinquefolius is a summer flowering plant. In New England, flower buds and leaves emerge simultaneously around the middle of June, with flowers eventually appearing in July. Fruits mature to a deep red color by early September. The seeds exhibit a type of dormancy called morphophysiological dormancy, sometimes called "double dormancy", which requires two full winters to completely break dormancy. Germination finally takes place eighteen months after the fruit initially ripened.

American ginseng was of minor importance in Native American folk medicine. The Haudenosaunee ingested or smoked the roots as a panacea. The Menominee in northern Wisconsin used it as a tonic and to increase one's mental capability, while the Penobscot in Maine used it to promote fertility. The Seminole in Florida used it for gunshot wounds. In the late 19th century, the Cherokee sold large quantities of ginseng to traders for fifty cents a pound. According to James Mooney, a decoction made from its roots was drunk to relieve headaches and cramps. There is no good evidence that American ginseng is effective for preventing or treating influenza or the common cold.

As wild populations of American ginseng began to decline in the late 19th century, a market developed for cultivated ginseng. In 1887, the tinsmith George Stanton planted ginseng in the forest around Apulia Station, a hamlet in the town of Fabius in Onondaga County, New York. In his obituary (1908), Stanton was called the Father of the Cultivated Ginseng Industry. Farther north, the cultivation of Panax quinquefolius pioneered by Clarence and Albert Hellyer in Norfolk County, Ontario, beginning in the 1890s. American ginseng is grown commercially under artificial shade. Under these conditions, a crop is harvested three to five years after seeding. Ginseng is also grown under forest-based, wild-simulated conditions, which require 6–10 years (or more) before harvest. Based solely on yield, forest farming may be 1/10 as productive as commercial cultivation. In 2024, American ginseng exports – an indicator of cultivation and production – showed that Canada led with 2,974,971 kg (6,558,688 lb), China had 2,165,977 kg (4,775,162 lb), United States with 428,357 kg (944,366 lb), and South Korea with 333,355 kg (734,922 lb) as the four largest producers. Some states encourage the planting of ginseng both to restore natural habitats and to remove pressure from remaining wild populations. …

The name ginseng ultimately derives from the Chinese herbalism term, rénshēn. Other Chinese names are huaqishen (simplified Chinese: 花旗参; traditional Chinese: 花旗參; pinyin: huāqíshēn; Cantonese Yale: fākèihsām; lit. 'Flower Flag ginseng') or xiyangshen (simplified Chinese: 西洋参; traditional Chinese: 西洋參; pinyin: xīyángshēn; Cantonese Yale: sāiyèuhngsām; lit. 'west ocean ginseng'). The genus name "Panax" is derived from the Greek 'Panakos' (panacea), in reference to the supposed benefits attributed to the herb. The specific epithet "quinquefolius" means five-leaved.