Help - how can I rescue my Clematis
I have two clematis in pots which I am sorry to say I have sadly neglected. They have been in large pots for about 2 years and produced few flowers. I think I pruned them wrong; they have a lot of dead looking stem at the bottom but lots of spindly new growth on top. How and when do prune these? Will I always have to have the lower bare stems. If I plant them out in the garden when should I do it? All advice humbly received. (The are Ville de Lyon and The President).