Water regularly during the first year to establish a strong root system. Once established, Achillea odorata is quite drought-tolerant. Allow the soil to dry out completely between waterings.

Overwatering can lead to root rot, so ensure good drainage.

Prune after the main flush of flowering to encourage a bushier habit and potentially a second bloom. Remove spent flower stalks to prevent self-seeding and maintain a tidy appearance.

Cut back established plants in late winter or early spring.

Easily propagated from seed sown in spring or by division of established clumps in early spring or autumn. Softwood cuttings can also be taken in late spring or early summer.

Ensure cuttings have a node and are planted in well-draining soil.

Achillea odorata is not typically grown in pots for long periods and prefers to be planted in the ground.

If grown in containers, repot in spring every 2-3 years into a slightly larger pot with fresh, well-draining potting mix. Avoid oversized pots.