Aconitum carmichaelii (Arendsii Group) 'Arendsii'
monk's hood 'Arendsii'
A tall herbaceous perennial, producing branched panicles of rich lavender-blue flowers that appear in early to mid autumn on stems that can reach over 1.5m high, above dark green, leathery, palmate to deeply-divided, lobed foliage
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 Purple | Green | ||
| Winter |
Position
- Full sun
- Partial shade
Aspect
North–facing or East–facing or West–facing
Exposure
Sheltered Hardiness
H7Botanical details
- Family
- Ranunculaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- Potentially harmful
- 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
- 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
Grows best in deep, cool, moisture-retentive soil in partial shade, but will also tolerate most soils and full sun if soil is humus-rich and protected with mulch to ensure that it is moist throughout the growing season; use protective gloves Staking may be necessary. See staking perennials for further advice
Propagation
Propagate by division in autumn or late winter; division every few years may encourage good flowering stems, though plants may be slow to re-establish; use protective gloves, all parts are highly toxic
Suggested planting locations and garden types
- Architectural
- Cottage and informal garden
- Wildlife gardens
- Flower borders and beds
Pruning
No pruning required except cutting back dead stems; use protective gloves
Pests
May be susceptible to aphids
Diseases
May be susceptible to fungal stem rot and Verticillium wilt
Get involved
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