Clematis nelly moser
Always mix myself with to prune or not to prune, I have noticed new growth on old stems, should this one be cut back now or wait...or not at all? Same with Montana large purple flowers , flowing summer to late ? Would it be worth trying some nelly moser cuttings now I wonder also ? I had thought of moving to a pot as now hidden , but read not to Thanks for help advice you can offer .