Posted: 09/02/2012 at 20:29
Hi, duck in reply to your Q i would not prune your montana Clematis. What i would do is grow another clematis,up through the montana.I grow C. tangutica'Bill Mackenzie up one of mine and they look good, it flowers early summer to mid-autumn.Bill Meackenzie his a group 3 Clematis which i prune in the next week our two depending on the weather.
I hope this will help you.
Good Luck and Happy Gardening
Tazman alun
