Bob Tarte wrote:
took just a bit of vine off this year. Do they sometimes just not
perform well when they overproduced the year before. Or does putting
too much food tend to make them go into leaf overdrive? It was
SUPPOSED to be a bloom builder that I put on there!

Thanks in advance for your help.

The best source I know for answering basic clematis questions.
http://faq.gardenweb.com/faq/clematis/

Check out 'It won't bloom! Why does my clematis not flower?' and 'How do
I prune my Clematis? Group 1, 2, 3s or A, B, Cs' in particular.

Suja