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Dioscorea (Winter Hardy and Subtropical Yam Root)

Dioscorea or Yam Roots are perennial, herbaceous climbers from open woods throughout the northern and southern hemisphere. They make vigorous stems emerging from a large rhizomatous rootstock in early spring and very showy, dense foliage on long vines. Winter hardy species from USDA climate zone 6 to 8 are ideal for any well drained soil at the base of trees or tall shrubs, where some species will wind up their stems up to 8 m in a single year. South American, subtropical, non winter hardy species are usually smaller and make short stems winding on the ground. Cooked and starch rich tubers from several species are used as food in Asia and the Americas, however we do not recommend to use any for human consumption and strictly sell all Dioscorea species as ornamental plants only!
Sow seeds flat at a minimum of some 5°C from early spring to early summer in any rich, well drained soil in a sunny spot. Transplant rhizomes in autumn after foliage has yellowed.
All are USDA Climate Zone 6, unless not noted differently.
10 seeds per package, respectively 1 bulbil or 1 rhizome per package.

You find more Dioscorea species in this category: Succulent Elephant's Foot Caudex (Dioscorea spp.).
Articles
Dioscorea brachybotrya (Papa cimarrona)

Dioscorea brachybotrya (Papa cimarrona)

3 (5)m, Papa Cimarrona is a South American herbaceous perennial with ornamental, dissected, glossy foliage with prominent veins. For any humus rich, well drained soil in a sunny spot. In Central Europe this frost resistant member may be tried out in the garden in full sun with protection from winter wetness. Alternatively grow in pots and keep the dormant rootstock completely dry in winter and frostfree at a minimum of some 5°C. USDA Climate Zone 9. VI-VIII.

(plus Shipping Costs)
seed package 4007 € 4,99
Dioscorea bryoniifolia

Dioscorea bryoniifolia

USDA Climate Zone 10.

(plus Shipping Costs)
seed package6872 € 4,99
Dioscorea bulbifera (Air Potato)

Dioscorea bulbifera (Air Potato)

5 (10)m, Air Potato is a fast growing herbaceous twining vine with a massive potato-like tuber. It makes most ornamental, large, broadly heart-shaped, fresh green leaves and axillary born aerial bulbils which may gain up to 1 pound in weight. The bulbils as well as the tuber are rich in starch. Tubers from some cultivated forms are said to be edible if prepared right, however poisonous forms do exist and we do not recommend to use any for human consumption! Easily cultivated in any rich, well drained soil in a sunny spot throughout the year at a minimum of some 10°C. In winter reduce watering to a minimum.
Bulbils are not available for a delivery to Australia and the U.S.

(plus Shipping Costs)
bulbil (01.0 cm)8385 € 1,99
bulbil (02.0 cm)8376 € 3,99
bulbil (03.0 cm)7333 € 5,99
bulbil (04.0 cm)8375 € 9,99
Dioscorea caucasica (Caucasus Yam Root)

Dioscorea caucasica (Caucasus Yam Root)

4 (10)m, Caucasus Yam Root is a herbaceous climber with broad arrow shaped, dark green foliage and clusters of small whitish flowers followed by triangular, light brown, paper like seed capsules in autumn. Native of the Caucasus and rarely seen in cultivation. Very easy and fully winter hardy. USDA Climate Zone 6. The rhizomes are flowering size and have at least 3 vegetation point each. VI-VII.

(plus Shipping Costs)
seed package2713 € 2,99*
* This price is valid if a single item is ordered only. The shop will automatically assign discounts on bulk purchases. If several packages are ordered from this species, they will be merged into a single package. Please refer to our General Terms of Business.
Dioscorea japonica (Japanese Yam)

Dioscorea japonica (Japanese Yam)

5 (10)m, Japanese Yam makes annual to semiperennial vines with ornamental, fresh green, arrow shaped leaves with very nice purplish red veins. It is native of open spots in woods in Japan and eastern China. In cold climates the shoots will die down in winter and resprout in following spring from the perennial, elongated, cylindrical rootstock. For any rich, well drained soil in a sunny to partially shaded spot, requires a climbing aid. Being a winter hardy species, give some winter protection from freezing through. USDA Climate Zone 6. VII-IX.
Bulbils are not available for a delivery to Australia and the U.S.

(plus Shipping Costs)
bulbil (01.0 cm)8003 € 2,99
bulbil (01.0 cm)
Dioscorea opposita (Chinese Yam)

Dioscorea opposita (Chinese Yam)

4 (7)m, Chinese Yam or Cinnamon Vine (syn. Dioscorea batatas, Dioscorea oppositifolia) is a vigorous climber withan annual shoots from a vertically growing tuber which may gain up to 50cm in length. Dioscorea oppositifolia may be propagated by top cuttings of the tuber which is hence replanted or by axillary born bulbils. The species is winter hardy in Central Europe, if tubers are planted rather deep in any rich, very well drained soil with a light winter protection (e.g. mulch layer). USDA Climate Zone 7/8. VII-IX.
Bulbils are not available for a delivery outside Europe.

(plus Shipping Costs)
bulbil (01.0 cm)8671 € 0,99
Dioscorea sansibarensis (Zanzibar Yam Root) Exclusive

Dioscorea sansibarensis (Zanzibar Yam Root) Exclusive

7 (12)m,, Zanzibar Yam Root is a perennial, semi-evergreen climber with ornamental, large, glossy, mid green oval, ribbed leaves, large, long flattened tubers and violet axillary bulbils turning pale brownish-green. Dioscorea sansibarensis is native of tropical West Africa from Ivory Coast to the Sudan, and south to Angola, Rhodesia and Mozambique. Easily cultivated in any rich, well drained soil in deep pots at a minimum of some 12°C throughout the year.
Bulbils are not available for a delivery to the U.S.

(plus Shipping Costs)
bulbil (03.0 cm)8806 € 14,90
bulbil (04.0 cm)8805 € 19,90
Dioscorea tenuipes Exclusive

Dioscorea tenuipes Exclusive

3 (5)m, a fully winterhardy species with annual vines with ornamental, midgreen, arrow shaped leaves, small inconspicuous flower racemes followed by three-winged seed capsules. Unlike related species Dioscorea tenuipes makes horizontal storage rhizomes. Native of open spots in woods from Koreo to China and Japan. Easily grown in any rich, well drained soil in a sunny to partially shaded spot. Plants require a climbing aid. VIII-IX.
Rhizomes are not available for a delivery to Australia and the U.S.

(plus Shipping Costs)
dormant rhizome (07.0 cm)8540 € 14,99
Dioscorea villosa (North American Wild Yam)

Dioscorea villosa (North American Wild Yam)

3 (5)m, North American Wild Yam is a herbaceous climber with a perennial, brownish rootstock and narrow heartshaped, glossy, fresh green leaves. It is native of humus rich, slightly moist soils in woods and roadsides in the USA. For any humus rich, well drained, slightly rocky soil in full sun to partial shade. Requires a climbing sail. USDA Climate Zone 6. VI-VII.

(plus Shipping Costs)
seed package1013 € 4,99*
* This price is valid if a single item is ordered only. The shop will automatically assign discounts on bulk purchases. If several packages are ordered from this species, they will be merged into a single package. Please refer to our General Terms of Business.