greg mosser wrote:yacon (Smallianthus sonchifolia) is a low-glycemic fruit-like root in the sunflower family, which makes tubers to reproduce (like sunchokes/sunroots) and juicy, crunchy roots to eat! plenty of tubers available, each will make a plant that if treated right can grow 20+ lbs of roots and enough tubers to start 5 or 10 plants next year. pot up now to plant out in a few weeks (or more), or plant direct.
$2/propagule, plus shipping.
pm to order. i can also answer questions you might have about growing them.
will update this post with pics when i get a chance. thanks for looking!