Tatarian Cephalaria prefers consistently moist soil during its active growing season. Water deeply when the top few centimeters of soil feel dry.

Reduce watering in late autumn and winter to prevent waterlogged roots, especially if grown in cooler climates or overwintered indoors.

Deadhead spent flower stalks to encourage further blooming and prevent self-seeding if desired. In late autumn or early spring, cut back the dead foliage to the ground to tidy the plant and promote fresh growth.

Remove any diseased or damaged stems as needed throughout the season.

Tatarian Cephalaria can be propagated by seed sown in autumn or early spring, either directly outdoors or in a cold frame. Division of established clumps is best done in early spring or autumn.

Ensure divisions have healthy roots and at least one growing point for successful establishment.

As a large herbaceous perennial, Cephalaria gigantea is not typically grown in containers that require frequent repotting.

If container-grown, repot in early spring every 2-3 years into a larger pot with fresh, well-draining soil. Ensure the new pot provides adequate space for root expansion.