Dioscorea elephantipes:

Related to the yam, Dioscorea elephantipes is the world’s most special potato. Some extremely old plants in habitat have been recorded reaching up to 7 feet in diameter.  A perfect windowsill plant. Although most Dioscorea in cultivation are much smaller, they are no less impressive—shooting off a vine that grows faster than you can water it.

U.S. SHIPPING ONLY
Plants ship bare root, pot/soil not included