Clematis: blooming clematis, 1 by Texasgrower

Texasgrower wrote:
My first clematis is still blooming. We have had many nights at freezing or below and cold days, yet this plant is still booming. I have heavily mulched the plant. I also have been covering it with a sheet on the cold nights because she has been blooming all Fall. I don't want to lose my flowers. I don't see any new buds, but I do see new growth..

Is this normal? It's a NOID purple that sometimes throws six petals and sometimes throws eight. It bloomed in the Spring and then again in the Fall. How do you prune this in the spring? The pic below was taken in Oct. The blossom on it now is not as brilliant a color, but pretty none the less.