Vigorous Climbing Vines
Plants develop long climbing vines that require sturdy vertical support.Climbing vines need sturdy vertical support.
Iron Stick Chinese Yam Seeds
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Growing Level
Easy to Grow
Germination
High Germination
Garden Use
Trellis Growing
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About This Variety
Meet This Variety
Iron Stick Chinese yam is a cultivated form of Chinese yam (Dioscorea polystachya), a perennial climbing vine grown for long underground tubers. It needs a deep, loose bed and sturdy support for its vigorous vines.
Chinese yam can spread beyond cultivation and is considered invasive in several U.S. states. Check local regulations before sowing, grow only where permitted, and prevent aerial bulbils or plant material from escaping the garden.
A perennial climbing Chinese yam grown for long underground tubers; check local rules and prevent escape because the species is invasive in some areas.
Growing at a Glance
Botanical Name
Dioscorea polystachya
Life Cycle
Perennial
Sun Requirement
Full Sun
Water Needs
Moderate
Soil Preference
Deep, loose, fertile, and well-drained
Why Gardeners Love It
Underground Tuber Crop
Deep, loose soil gives underground tubers room to lengthen and develop.Loose soil gives tubers room to develop.
Perennial Growth
Plants can return from underground growth where winter conditions permit.Plants may return from underground growth.
Best Growing Conditions
- Sun Exposure
- Full Sun
- Moisture Needs
- Moderate
- Soil Preference
- Deep, loose, fertile, and well-drained
How to Grow
Check and Prepare
Check local rules, then choose a contained deep bed with sturdy support.
Check local rules and prepare a contained bed.
Sow
Sow only where permitted, following the packet's depth and seasonal timing.
Sow only where permitted using packet guidance.
Support
Provide a strong trellis before the climbing vines begin rapid growth.
Install strong support before vines climb.
Water
Keep soil evenly moist during active growth without leaving it waterlogged.
Keep soil evenly moist, not waterlogged.
Harvest
Harvest tubers carefully and remove escaped bulbils or plant fragments.
Harvest carefully and prevent plant escape.
Garden Uses
Vegetable Gardens
Trellis Growing
Edible Landscapes
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