I bring the tubers indoors in late fall and store then wherever they land. This season, that meant they stayed in their wet potting mix in a cold spot. So it was with some trepidation that I opened the bag a few days ago - would the tubers be rotten through and through?
It turns out that a shoot had punched a hole in the bag, so there had been some aeration and a little drying. It was wet, but not rotting wet. Judging from the larger tubers, the plants did ok last year too - despite living in shallow window boxes:
The potato-like tubers of Sinningia tubiflora form underground - not near the surface like some other Sinningia.