Water regularly, especially during dry periods, to keep the soil consistently moist but not waterlogged. Reduce watering in fall as the plant enters dormancy. Ensure good drainage to prevent root rot.

Aim for deep watering less frequently rather than shallow, frequent applications.

Prune back dead or damaged stems anytime. Cut back the entire plant by about one-third to one-half in late spring or early summer to encourage bushier growth and more flowers.

Deadhead spent flower stalks to prevent self-seeding and maintain a tidy appearance.

Propagate by division in early spring or fall. Carefully divide established clumps, ensuring each section has roots and shoots. Seeds can be sown in autumn or early spring, either indoors or directly outdoors.

Stratification may improve germination rates.

Repot container-grown plants every 2-3 years in spring as needed. Choose a pot that is slightly larger than the current one, with adequate drainage holes. Use a well-draining potting mix.

Mature plants in the ground typically do not require repotting.