Perennial: Deciduous. Drought tolerant. Resistant to deer, insects & diseases. Attracts butterflies. Nice cut flower, border, pot & rock garden plant. Pinch 1/2 of plant by mid-July to allow plant to bush out. Blooms: summer-fall. Color: lavender blue w/yellow center. Excellent growth habit. Size: 2-3' x 2-3'. Exposure: sun. Water: moderate. USDA Z2. PP#10051