About
The Arendsii Group is a clump-forming perennial that can vary in appearance, featuring upright stems that reach approximately 1.2 meters in height. Its foliage consists of deeply lobed, dark green leaves. In the autumn, unbranched spikes emerge, showcasing hooded flowers in a lavender-blue hue.
About the genus
Aconitum consists of herbaceous perennials or biennials characterized by lobed foliage and clusters of hooded flowers arranged in racemes or panicles.
Growing conditions
- Sunlight
- Full sun, Partial shade
- Soil type
- Clay, Loam
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- East-facing, North-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H7
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 1-1.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- Cottage and informal garden, Architectural, Wildlife gardens
- Toxicity
- TOXIC if eaten, avoid skin contact. Wear gloves and other protective equipment when handling. Pets: TOXIC if eaten, avoid skin contact - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Care notes
- Cultivation
- Best grown in moisture retentive, fertile soil in partial shade. Staking may be necessary. See staking perennials for further advice
- Pruning
- No pruning required except cutting back dead stems; use protective gloves
- Propagation
- Propagate by division every third year in autumn or late winter to maintain vigour, although plants can be slow to re-establish
- Pest resistance
- Generally pest-free but may be susceptible to aphids
- Disease resistance
- May be susceptible to fungal stem rot and verticillium wilt