Water regularly, especially during dry periods, ensuring the soil is consistently moist but not waterlogged. Allow the top few centimeters of soil to dry out between waterings to prevent root rot. Reduce watering in cooler months or if the plant shows signs of dormancy. Established plants are somewhat drought-tolerant but perform best with consistent moisture.

Deadhead spent flowers regularly to encourage continuous blooming and prevent self-seeding. Pinch back young plants to promote bushier growth. A more significant prune can be done in mid-summer if flowering slows down, or in early spring to shape the plant and remove any leggy growth. This helps maintain vigor and appearance.

Easily propagated from softwood cuttings taken in spring or early summer. Root cuttings in a well-draining potting mix, keeping them moist and warm. Seeds can also be sown indoors 6-8 weeks before the last frost or directly outdoors after the danger of frost has passed. Division of established clumps is another viable method.

For container-grown plants, repot annually in spring into a slightly larger pot with fresh, well-draining potting mix. This provides new nutrients and space for root growth. If the plant is root-bound, gently loosen the roots before repotting. Ensure the new pot has adequate drainage holes to prevent waterlogging.