Last year (October 2016) I cut the stems of my sunchoke patch at the end of our backyard. I dumped them on the ground so I could grind/chip them later for mulching.
When after I few weeks I finally had time for grinding, I noticed that 2 stems grew tiny new sunchoke tubers.
But before I could replant these tubers our two free range rabbits got hold of these stems ..... So I have to wait for next year.