Perennial: Deciduous. Excellent border, pot, woodland, cut flower & rock garden plant. Attracts bees, butterflies & hummingbirds. Blooms: spring-summer. Bloom color: purple. Ht: 2-3 ft. Exposure: sun/part shade. Water: moderate. USDA Z5-9. Beloved writer & illustrator, Tasha Tudor, always collected seeds from her garden. Her family now carries on the tradition & offers them for sale.