Monkshood

They will withstand sun, but they must be watered constantly. Monkshood takes 2 to 3 years to bloom from seed. The Monkshood, 'Aconitum napellus', is a wonderfully different perennial for your shade garden. They bloom from late summer into early fall. The flowers occur in clusters along tall spikes. Note: All parts of the plant are poisonous, especially the roots. Plant in late fall or early spring. Flowers are deep blue to blue and have 1 to 2 inch high hoods. Monkshood prefers shady locations. Monkshood perform best in shade under trees or on the east or north side of a house. They are used for cut flowers and shade gardens. Monkshood requires soils that are high in organic matter and the soil must be moist, but not soggy. ... details