Easy to grow succulent-leaved vine. Can grow 15 feet or more in a season. Edible and nutritious leaves, produces copious amounts of edible tubers - both underground and along the stems. A house plant you can nibble - good in hanging baskets. Drought tolerant, and although we call it a tender perennial, we've had them overwinter outside in our beds. Rare, from Peru. An obnoxious invasive in sub tropical areas. The massive vines can pull down mature trees with the weight of it's heavy succulent leaves and aerial tubers.