I used a grocery store tuber and don't know what kind it is, where it was grown, or how long it takes to produce tubers.
I guess that's a good argument for buying slips of known varieties.
Joel Hollingsworth wrote:
If they don't produce a good yield this year, might it be worthwhile to leave them in the ground so they have a head start next year? Or would they spend the second year making seeds instead of tubers?