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