Perennial: Deciduous. Deer resistant. Fern-like leaves carry clusters of tiny flowers spring-summer. Good cut flower, border, rock garden and woodland plant. Waterside is okay. Tolerates bog and coast. Dwarf variety from Holland. Attracts butterflies. Bloom color: purple rose. Size: 16" x 18". Exposure: light sun to shade. Water: moist. USDA Z5.