The Aconitum, also known as the Aconite, Wolf’s-bane and Monkshood are poisonous plants with tall, spiky flower heads and deeply loved foliage. The Aconitum carmichaelii ‘Arendsii’ (Monkshood) is about 2 – 3 feet tall; a sturdy plant with thick, 3-loved leaves and deep-blue, hooded flowers borne in spikes from late summer through fall.
Their thick fleshy roots dislike disturbance. Plant them in spring or fall in rich, moist, but well-drained soil. The roots are brittle; do not disturb the plants unless they become overcrowded. Site them where they can get afternoon shade.
Monkshoods are tall, spiky plants that are best for the back of the border. Plant them with late-blooming perennials such as Sweet Joe-Pye-weed (Eupatorium purpureum), Russian sage (Perovskia atriplicifolia), and asters.
3 – 4 ft high
Season of Bloom
Late Summer, Fall
3 – 7