How to prune NineBark
Some of my Diablo and Summer wine nine barks are very tall but rather "thin". I have been reading that Ninebarks should be pruned which I didn't know, they are so lovely in there arching wildness. Yearly I do cut out anything dead or broken, but I haven't "shaped" them or cut out live branches.
My question is if I prune these thin shrubs will it increase their volume - number of stems coming from the base? If so, how do I prune? Do I prune the tips of the branches and make them shorter? Or cut out branches?
Please note - these shrubs are in a difficult site and I need to help them all that I can. Thanks for as detailed advice as possible.