They are edible and actually quite tasty. I learned of its use in Chinese medicine from Joe Hollis at the Long Hungry Creek Herb Conference in October of 99. I love this plant simply for its beautiful appearance in my shade garden. Perennial climbing vine native to Eastern N. America from New England to Minnesota and Ontario, south to Florida and Texas. Wild Yam is found growing in damp woods and swamps, thickets, roadside fences and hedges.
Cultivation is easy from root cuttings taken in the winter or late fall.
Tubercles or baby tubers can be found in the leaf axils in late summer and early autumn. These should be taken when about pea size and easily fall away from the vine. They should be planted immediately in individual pots and kept inside till spring. Wild yam prefers sandy to loamy medium, well-drained, moist soils and requires partial shade. Leaves have very prominent veins which run lengthwise from the center top of the heart shape out into a fan patern.