Maximize tubers (or: everybody wants one!)
I grew the Dahlia "Wheels" this year. Everybody wants a tuber from it!! It is a pretty healthy fellow with plenty of buds. It does not seem to have lots open at one time, the way my Chilsons pride does, but otherwise it is a HIT. For my first year with dahlias they all seem to be disgustingly healthy. (I Did SOMETHING right!) Anyway, does a healthy plant above ground give an indication that I should get quite a few productive divisions of the tuber when I dig it up? Is there any amendment or food I can give them that would maximize the tuber growth?