Perennial Plant Association 1993 Perennial Plant of the Year!
Showy dark violet-blue spikes are very long blooming. A carefree tidy plant with crinkled, toothed glossy green, lance-shaped foliage, beautiful in or out of bloom. Prefers evenly moist soil with good winter drainage. Can be divided every 3 years in spring or fall. To keep plants neat, shear back by 1/2 after flowering.