Start seeds indoors in early April or seed in early spring. Prefers protected, sunny location. Produces light-blue flowers in drooping clusters. Seed directly in early spring. May germinate slowly.
Flowers are small white clusters.
Sow seeds in moist, partially shaded location. Thrives in rich, well-drained soil. Divide every 3 years. 36 Large, coarse plant with white flowers. Tall plant with feathery green leaves.