This is another Variety of Clematis Climber I have.
Called "Fireworks", again it produces Large Mauve shaded flowers in early Summer. It can produce a few later flowers in late August too. I generally feed these with a granular fertilizer in April and June. Some of my Clematis plants are grown in Containers, as our soil is very quick draining and they prefer moist conditions and their roots in shade.
So the containers are kept watered and gravel placed on top of the compost/soil mix for added shade.