I have a clematis, which is approx 3 yrs old and is in a container. It is situated in a backyard, northeast facing. The top half has turned purple, all the stems, leaves and tendrils, etc. I think that this must be due to nutrient deficiency. What does anyone else think?
Certified GKH Gardening Expert
Container clematis will need some nutrients.
Here is a few links that will help you.