tuberous begonias not growing
I had several tuberous begonias: Two were 1 year old seedlings, one was a cutting, and the other was a 8 year old tuber.
I let them die down and stored them in the basement last year. There is still no signs of growth. I brought them up last week and lightly watered them. Still nothing.
Any ideas what might have happened? The tubers are visible and are not soft or hollow.