Water Hieracium tomentosum moderately during the growing season, allowing the soil to dry out slightly between waterings.

Reduce watering significantly in winter, providing just enough to prevent the soil from becoming completely parched. Ensure good drainage to prevent root rot, as this plant dislikes consistently wet conditions.

Prune Hieracium tomentosum after flowering to remove spent flower stalks and maintain a tidy appearance.

You can also trim back any straggling or overgrown foliage in late autumn or early spring to encourage compact growth. Deadheading regularly may promote further blooming.

Propagate Hieracium tomentosum by division in early spring or autumn. Carefully lift the plant and separate the root ball into smaller sections, each with healthy roots and shoots.

Replant the divisions immediately into well-draining soil. Seed propagation is also possible but can be less reliable.

Repot Hieracium tomentosum every 2-3 years, or when it becomes root-bound. The best time to repot is in early spring before new growth begins.

Use a well-draining potting mix, such as a cactus or succulent blend, and a pot that is only slightly larger than the current one.