Propagation
Sow fresh seed during autumn in pots and place in a cold frame to germinate.

Divide established clumps during spring. When planting out space up to 30cm (1ft) apart and plant firmly in the soil.

Note:
During winter the plant dies down and disappears. It is advisable to mark its position so it is not dug over.

Botanic information
Leaf: The plant has basal and stem leaves. The large basal dark green leaves are narrow lanceolate with an acuminate apex and the smaller stem leaves are linear.

Flower: The small radiate flower-heads are arranged in a dense terminal spike that is up to 700mm (28in) tall and opens from the top down and appears during late summer. The flowers are very attractive to bees.

Fruit: The small cypsela seeds are viable but the plant may be easily reproduced vegetatively.