They are half hardy to frost tender, min 5-16C. Grow them in any fertile, well drained soil in full sun or partial shade. Plant in a rich, well-drained soil in full sun and water regularly in summer. Prune congested or overgrown plants in spring and provide support. Fully frost hardy to frost tender, they are best suited to warm areas. Stems need support. Thin out and spur back crowded growth in spring.
Propagate from seed in spring or cuttings or by layering in summer.
Pests, diseases or disorders
Prone to red spider mites, nematodes and scale insects.