Water regularly during establishment, especially in dry periods. Once established, Carduus acanthoides is drought-tolerant and prefers well-drained soil. Overwatering can lead to root rot.

Allow the top few centimeters of soil to dry out between waterings.

Pruning is primarily for removing spent flower stalks to prevent unwanted seed dispersal and for managing its spread. Cut back flowering stems after blooming.

If the plant becomes unwieldy or diseased, it can be cut back to the ground level in late winter or early spring.

Carduus acanthoides readily self-seeds, which is its primary method of propagation. Seeds can be collected from dried flower heads and sown in autumn or early spring.

Division of established clumps is also possible in early spring.

Repotting is generally not applicable to this perennial, as it is typically grown in situ and can become quite large. If starting from seed or divisions and temporarily potted, repot into a larger container when the root system fills the current pot, usually in early spring.