I have, in the past, been able to store my begonias in their pots over the winter in my basement. Now, I get a small leaf too late in the warm season. Can I do something to encourage faster growth?
Wood County Wisconsin
Thank you for your question. I am not certain I can give you a "how to promote faster and larger growth" answer, but perhaps you can get something out of this Minnesota Extension publication to help your care of them: https://extension.umn.edu/flowers/tuberous-begonias