Dioscorea elephantipes (L'Hér.) Engl.
Elephant's Foot, Hottentots' Bread, Hottentot Bread, Turtle Back, Tortoise Back Plant, Turtle Shell
Dioscorea elephantopus, Dioscorea montana, Dioscorea testudinaria, Rhizemys elephantipes, Rhizemys montana, Tamus elephantipes, Testudinaria elephantipes, Testudinaria montana
Dioscorea elephantipes is a slow-growing and long-living succulent with tuber above ground level covered with layers of corky bark. The caudex can grow up to 6 feet (1.8 m) in nature, resembling an elephant's foot. Stems grow in a climbing fashion. Leaves are heart-shaped. Flowers are dioecious, with male or female flowers occurring on separate plants. They are pale greenish-yellow and normally appear in winter. Male flowers are erect with spiny racemes. Female flowers are in spinescent, spreading spikes.
USDA hardiness zone 9b to 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C).
How to Grow and Care
In most climates, Elephant's Foot are grown as indoor plants, and the plant is relatively easy to grow from seed. The roots aren't deep, so plant Elephant's Foot in a shallow pot filled with porous, well-drained potting soil. Water the plant around the edges of the pot and not directly on the tuber. Allow the soil to become nearly dry before watering again.
If you grow Elephant's Foot outdoors, place it in sandy soil amended with rich, well-rotted compost. Be careful not to overwater.
Elephant's Foot care is simple. Feed the plant with a very dilute (25 percent of normal) fertilizer with each watering. Withhold fertilizer and water sparingly during the plant's dormant period, when the vines turn yellow and die back. Plants often go dormant during the summer, but there is no set pattern or time schedule.
If the vine dries up completely during dormancy, move the plant to a cool place and withhold water completely for about two weeks, then return it to the sunny location and resume normal care.
This species is native to the dry interior of South Africa.
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