Water regularly, especially during dry spells, to keep the soil consistently moist but not waterlogged. Overwatering can lead to root rot. Reduce watering in winter when the plant is dormant.

Ensure good drainage to prevent fungal diseases.

Prune back hard in late winter or early spring to encourage vigorous new growth and flowering. Remove any dead, damaged, or crossing stems. Deadhead spent flowers to promote more blooms and prevent seeding.

This vigorous climber benefits from regular trimming.

Propagate from semi-hardwood cuttings taken in summer or by division in spring. Cuttings root readily in moist potting mix. Divisions should be replanted immediately and kept well-watered to establish quickly.

Seeds can also be sown in autumn or spring.

Repot container-grown plants every 2-3 years in spring, moving them to a slightly larger pot. Use a well-draining, peat-based compost. Ensure the new pot has adequate drainage holes.

This helps to refresh the soil and provide more space for root growth.