Water regularly during the growing season, allowing the soil to dry out slightly between waterings. Reduce watering significantly in autumn and winter, especially if grown in cooler conditions, to prevent root rot.

Ensure good drainage to avoid waterlogged conditions.

Deadhead spent flower heads to encourage reblooming and to prevent self-seeding. In late autumn or early spring, cut back the old stems to the ground.

This tidies the plant and encourages fresh growth for the next season. Remove any dead or damaged foliage as needed.

Propagate by division in early spring or autumn. Carefully lift the clump and divide it into smaller sections, ensuring each section has roots and shoots. Alternatively, sow seeds in autumn or early spring.

Seed germination can be erratic and may benefit from stratification.

Globe thistles are relatively unfussy and prefer to be slightly pot-bound. Repotting is usually only necessary every 2-3 years, ideally in spring before new growth begins.

Choose a pot only slightly larger than the current one and ensure it has excellent drainage.