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Wild yam

Dioscorea villosa

Also called Colic Root, Yam Root, Chinaroot, Yellow Yam, Four Leaved Yam, Wild Yam Root

Wild yam
Photo: No machine-readable author provided. Phyzome assumed (based on copyright claims)., CC BY-SA 3.0

Wild yam is a twining, tuberous vine native to eastern North America, grown mainly for its medicinal root. It is hardy and tolerant of a range of conditions, growing well in woodland edges and partial shade.

Family
Dioscoreaceae (Dioscore family)
Grows as
Climber, Bulb
Light
Part shade, Bright indirect
Water
Water regularly during the growing season and let the top of the soil dry slightly between waterings.
Soil
Moist, well-drained, loose soil rich in organic matter.
Temperature
Hardy in cool temperate climates; tolerates winter cold and dies back to the tuber each year.
How easy
Moderate
Native range
S. Ontario to C. & E. U.S.A.
Climate
temperate

About

Dioscorea villosa is a species of twining tuberous vine which is native to eastern North America. It is commonly known as wild yam, colic root, rheumatism root, devil's bones, and fourleaf yam. It is common and widespread in a range stretching from Texas and Florida north to Minnesota, Ontario and Massachusetts.

Safety

Dioscorea villosa contains diosgenin, which despite claims is not a phytoestrogen and does not interact with estrogen receptors. Other steroidal saponins are also found in the plant.

Other Dioscorea plants

Dioscorea abyssinica · Water yam · Air yam · Yellow guinea yam · Black Bryony · Yam · Elephant's Foot · Wild Yam · Elephant's Foot Yam · Lesser yam · Yam · Dioscorea fordii

Text excerpted from the Wikipedia article Dioscorea villosa by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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