How and when to prune clematis for the best show Clematis is a climbing plant that blossoms to create breath-taking scenery in the garden. The clematis plant has many, many variations, so it is possible to see many different colours, in many different shapes and sizes, from very large traditional flowers like that on Clematis multi Blue to small nodding yellow bellflowers often associated with early flowering varieties such as Bill Mackenzie. Many people are…