Propagation
Sow fresh seeds in situ during spring.

Divide established clumps (rhizome) during spring.

Note:
Take care as contact with the foliage may cause skin irritation.

This species Achillea millefolium has a rich herbal tradition and is still being used in herbal medicine worldwide particularly in Europe. 

Botanic information
Leaf: The leaves are lanceolate to linear and the margin is normally pinnatisect, but sometimes entire. The colour varies from dark to grey green and the soft texture leaf is aromatic when crushed.

Flower: The radiate flowers have ray florets and disk florets and are normally the same colour. They are arranged in flat corymb up to 100 mm (4 in) wide which appears from late spring to summer.

Fruit: The small seed is not commonly used and the plant is normally reproduced vegetatively.