Water regularly to keep the soil consistently moist, especially during dry periods. Avoid waterlogged conditions, as this can lead to root rot.

Allow the top few centimeters of soil to dry out slightly between waterings for best results.

Deadhead spent flowers to encourage more blooms and prevent self-seeding. Cut back the foliage in late autumn or early spring to tidy the plant and remove any disease or pest overwintering sites.

Division can also be done during this time.

Easily propagated by division of established clumps in spring or autumn. Sow seeds indoors in late winter or sow directly outdoors in spring after the last frost.

Cuttings can also be taken in early summer and rooted in moist soil.

Aster ageratoides is generally a robust perennial that does not require frequent repotting. If division is performed, it effectively refreshes the plant.

For container-grown specimens, repot every 2-3 years into a slightly larger pot with fresh potting mix.