Very popular in Japan, this attractive Japanese Yam, a perennial vine is prized for its heart-shaped foliage, fall blooms, and tasty and nutritious tubers, which are formed both underground and on aerial branches.
Latin Name: Dioscorea nipponica
Site and Soil: Climbing Yams like 1/2 day to full sun and well-drained soil.
Pollination Requirements: Climbing Yams do not require pollination.
Hardiness:Climbing Yams can be grown where temperatures fall to minus 25° F.
Bearing Age: 2-3 years after planting.
Size at Maturity: 8-10 ft. in width on fence or other support.
Bloom Time: Spring & Fall
Ripening Time: Tubers are ready in fall.
Yield: 5-10 lbs.
Pests & Diseases: Climbing Yams are not bothered by pests or diseases.
USDA Zone: 5
Sunset Western Zone: Not listed
Sunset Northeast Zone: Not listed