Clematis Kaiu
This unusual clematis is great for providing a bit of colour and interest to non-flowering shrubs in summer as it clambers over them, flowering freely from June to October. It needs shade at it's base and light above. In winter it dies back, and then starts to grow again in early spring - which is when stems should be pruned to 30cm above the ground. I have to admit I don't do this and it seems to do no harm.