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Hardy Yam in the GardenTags plant encyclopedia

Dioscorea batatas. syn. Dioscorea polystachya ; Dioscorea opposita

 

Hardy Yam

The Hardy Yam is a vine with heart-shaped leaves, and that produces edible aerial tubers.

Contributed by @petecross

 
plant Features
  • Hardy Yam likes full sun to partial shade

    Full sun to partial shade

  • Hardy Yam likes occasional watering

    Occasional watering

  • Hardy Yam is full frost hardy: 5f (-15°c)

    Full Frost Hardy: 5F (-15°C)

  • Hardy Yam likes moist and free draining

    Moist and free draining

 
plant information

Common name

Hardy Yam

Latin name

Dioscorea batatas. syn. Dioscorea polystachya ; Dioscorea opposita

type

Tuberous Vine

family

Dioscoreaceae

ph

5.5 - 8.0 Acid - Neutral

  • Light

    Hardy Yam likes full sun to partial shade

    Full sun to partial shade

  • Frost

    Hardy Yam is full frost hardy: 5f (-15°c)

    Full Frost Hardy: 5F (-15°C)

  • Soil

    Hardy Yam likes moist and free draining

    Moist and free draining

  • Water

    Hardy Yam likes occasional watering

    Occasional watering

Plant & bloom calendar

  •  
    Best time to plant
  •  
    When the plant will bloom

full grown dimensions

The size of a fully grown Hardy Yam is 1.50meters x 3.00meters 1.50 M 3.00 M

Dioscorea batatas. syn. Dioscorea polystachya ; Dioscorea opposita

The Hardy Yam is a vine with heart-shaped leaves, and that produces edible aerial tubers.


Flowering

From Late Autumn TO Mid Autumn

Flowers appear from late Summer to mid Autumn, and each plant has either male or female flowers - so if seed is required, two plants are needed, one male and one female.

 

Propagating by seed

From Early Spring TO Mid Spring

Sow seed in early Spring in a warm greenhouse, and only just cover the seed. It takes 1-3 weeks to germinate at 20°c. Prick out the seedlings when they are large enough to handle and grow on in the greenhouse for their first year.

 

Planting

From Mid Spring TO Late Spring

Plant out in late Spring as new growth appears. Plant in to well-draining, moist soil, in a sunny, or partially sunny, site.

 

Propagating tubercles

From Late Summer TO Early Autumn

Tubercles (baby tubers) are formed in the leaf axils. These can be harvested when they are about the size of a pea, in late Summer to early Autumn when about the size of a pea. Pot them up in individual pots in an unheated greenhouse or cold frame, covering them with about 10mm of soil. Keep the soil moist, but not wet. When they come into active growth in late Spring to early Summer, plant them out.

 
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