Water regularly, especially during the first year, ensuring the soil dries slightly between waterings. Avoid waterlogging, which can lead to root rot.

Once established, it's relatively drought-tolerant but benefits from occasional deep watering during prolonged dry spells to maintain flowering.

Deadhead spent blooms to encourage continuous flowering and prevent self-seeding. In late winter or early spring, cut back old stems to about 10-15 cm above the ground to promote new growth and maintain a tidy appearance.

Easily propagated from seed sown in autumn or early spring, or by taking softwood cuttings in late spring/early summer. Seeds may require a period of cold stratification.

Cuttings root readily in moist, well-draining soil.

Young plants may need repotting annually or biennially into slightly larger containers. Mature plants are best left undisturbed in the ground.

If repotting is necessary, do so in spring before new growth begins, using a well-draining potting mix.