Perennial Herb: Is there a darker one? This rare and unusual one is A MUST have-no kidding! Deciduous. Drought, deer, gopher and fire tolerant. Good for poolsides, pots, borders & as a cut flower. Bloom time: summer-fall. Bloom color: very dark purple, drooping. Clump forming. Height: 3-5'. Water water well during growing season. USDA Z7.