Hi, I have had very helpful information from this site before, and now I have a new question. I am on a Facebook page for Dahlia lovers and there is a lot of talk about gall. I have been growing dahlia's for several years without problem and now I think I am paranoid. I lifted my dahlia tubers and found some long white growths that could be roots, but I need to be sure. They are growing out of the bottom of the tuber cluster. Please see the photo. I would appreciate you letting me know if I should be concerned. I am in Estacada.