Clematis rubens montana pruning
I have 2 rebens that have grown over an arch well over he last year,it says on the label tp prune after flowering, I am worried as I dont know how and if i cut it back it means it won't be covering the arch any more...and will have to start again next year.So you see i dont quite understand, sorry to sound ignorant it looked so beuatiful when it was in flower. Any advice would be wonderful. I have just bought another called Clematis Justa and thought as it is supposed to flower from now till September I could plant that next to it to flower after rubens.
thanks in advance