I have several new clematis which are in group 3. Some have grown to the top of the trellis and are wending their way across the top. I'm trying to understand about how they should be pruned. The Alionushkas have had 3 or 4 flowers on them and I have 3 flammulas which are only about 18 inches high and are just showing signs of a few flower buds. What would your advice be with these please? As I understand, you prune in March to above the first pair of strong buds. Does this mean that they have to make all their growth every year? I know that they flower on new wood so will they never be any bigger than they are this year? I've no experience with these and hope that my question isn't too garbled!