Shrub: Deciduous & fairly drought tolerant. Deer resistant. Nice for borders. Fragrant foliage & flowers. Blooms on current growth. Good cut flower. Attracts butterflies. Native to E. Asia. Flowering time: summer to frost. Bloom color: dark purple. Height: 2 feet. Width: 2 feet. Exposure: sun. Water: moderate/dry. USDA Z4.