Needs tying to supports. Thin out crowded stems in spring. They are half hardy to frost tender, min 7-18C. Make sure you provide them with fertile well drained soil with semi-shade in the summer. You will need to water regularly, and less in the cold weather.
You can propagate by semi-ripe cuttings in the summer.
Pests, diseases or disorders
Aphids, powdery mildew and red spider mites.