Pruning Saskatoon berry 'tree'/ Clematis
I have a Saskatoon berry bush that is out of control, it at least 15 ft. tall, if not more. I'd like to bring it down to a more manageable level. Would I prune in the late fall or should I wait until spring? I was planning on removing the top third this first pruning.
I'm not sure of the variety of the clematis, it looks most like Clematis macropetala Blue Bird. It about 10 ft., the bottom looks like a bunch of dead sticks, then it is full of fluffy seed heads and finally at the top it has a somewhat droopy looking purplish/blue flower.
My question is can I prune it right back or would that kill the whole plant? Reading about the Blue Bird (again I'm not sure that is what I have) variety it said you don't need to prune it at all, just tidy it. I would like to enjoy the flowers but you can't see them because they all seem to be growing on the top of the plant.
Any help would be appreciated.