Viewing post #2778434 by AlexKr

GardensJohn said: I think the pruning all the way to the ground has even affected the number of petals on the blooms. This used to always have eight petals. now it is only six. Again, we'll see next year.

Yes. More specifically, I think it has to do with whether the flowers are growing on "old wood" or "new wood". The former seems to produce semi-double flowers, whereas the latter produces single flowers.

How does your clematis look this year?