Aconitum carmichaelii Arendsii Group
monk's hood Arendsii Group
Arendsii Group is a somewhat variable, clump-forming perennial comprising erect stems to around 1.2m tall with deeply divided, dark green leaves. Unbranched spikes bear hooded, lavender-blue flowers in autumn
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Size
Ultimate height
1–1.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
Stem | Flower | Foliage | Fruit | |
Spring | Green | |||
---|---|---|---|---|
Summer | Green | |||
Autumn | Blue | Green | ||
Winter |
Position
- Full sun
- Partial shade
Aspect
East–facing or North–facing or West–facing
Exposure
Sheltered Hardiness
H7Botanical details
- Family
- Ranunculaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- Potentially harmful
- TOXIC if eaten, avoid skin contact. Wear gloves and other protective equipment when handling
- Genus
Aconitum can be herbaceous perennials or biennials with lobed leaves and racemes or panicles of showy, hooded flowers
- Name status
Accepted
How to grow
Cultivation
Best grown in moisture retentive, fertile soil in partial shade. Staking may be necessary. See staking perennials for further advice
Propagation
Propagate by division every third year in autumn or late winter to maintain vigour, although plants can be slow to re-establish
Suggested planting locations and garden types
- Cottage and informal garden
- Architectural
- Wildlife gardens
- Flower borders and beds
Pruning
No pruning required except cutting back dead stems; use protective gloves
Pests
Generally pest-free but may be susceptible to aphids
Diseases
May be susceptible to fungal stem rot and verticillium wilt
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