I picked up mine at whole foods. It didn't take long to sprout, they got super tall and multiplied like crazy. Only planting 3, it turned into 3 handfuls. I look forward to trying them at the end of this growing season when I'll have more. I hear they can replace potatoes in most variations.

This season will be my first attempts to grow them. They've all sprouted and look well. I've heard that they can be grown in Florida, but I've also heard that they often rot in our summers. If they do well for me this season, I'll probably build a raised bed dedicated to them next season. I bought mine from fleabay. Other tuber crops of similar taste and texture are: jicama, water chestnut, and Florida betony. Florida betony (aka rattlesnake weed) is considered a native invasive, but it has a carb that is similar to inulin, inulin being in sweet potatoes, jicama, and Jerusalem artichokes, which means diabetics can eat them. Of course, I can't advise anyone to use an invasive plant, if the sunchokes (which are also considered invasive, where they grow well) don't do well, but just thought I'd throw that little tidbit out there.

It is very easy to grow, good for yore health too.