Posted: 14/05/2014 at 19:09
I have 3 General Sikorski's and I've always treated them as Group 2, which is what they were labelled as. However, experience shows that many clematis can be treated as different groups. For example I only prune my Polish Spirit back to near the ground every two years, and that is universally labelled as a Group 3. In year 1 after a hard prune it flowers late as a normal Group 3 does, but in the second year when I prune it as a Group 2, it flowers early (and twice.) Grouping for 2 & 3 is somewhat arbitrary.