Water Tatarian Aster regularly, especially during dry periods, ensuring the soil remains consistently moist but not waterlogged. Allow the top few centimeters of soil to dry out between waterings to prevent root rot.

Reduce watering in autumn as the plant enters dormancy.

Deadhead spent flowers throughout the blooming season to encourage further flowering and maintain a tidy appearance. In late autumn or early spring, cut back the old stems to the ground to encourage new growth and prevent disease.

Tatarian Asters are easily propagated by division in early spring or autumn. Carefully dig up the plant and separate it into smaller sections, each with healthy roots and shoots.

Replant them immediately in well-prepared soil.

Established plants generally do not require frequent repotting and prefer to be left undisturbed. If a plant becomes overcrowded or seems to be struggling, it can be divided and repotted in early spring.

Ensure new pots have adequate drainage.