A couple I had picked up on sale late Spring and forgot about. They're still in the bags of sawdust. Doh! They each have a sprout and the tubers are a little soft, spongy but not mushy and no funky smell. One even has a tiny shriveled flower bud. They sure did try hard! Is there any way to save them? I could grow them inside under lights if necessary.
Whoops, found some begonia tubers...
I hope you tried. At least they would have a chance, but you'd need to be really careful about overwatering.