Liatris spicata ‘Alba’
Gayfeather. Perennial which has hairless stems and linear or linear-lance-shaped basal leaves, and linear stem leaves. In late summer and early autumn long lasting white flowerheads are borne in dense spikes.
Grow in moist soil but well-drained soil in sun or part-shade. It will reach a height of 40-50cm and a spread of 45cm.