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Herbaceous Perennial

Aconitum carmichaelii

Carmichael's monk's hood

Clump-forming species perennial, very variable in height from 60cm to 2m tall, but usually about 1.2m, with 3 to 5-lobed leathery dark green leaves. Dense panicles of large pale violet or pale blue flowers to 1.5m in height, are produced in autumn

Synonyms
Aconitum fischeri misapplied
Aconitum maximum
see moreAconitum fischeri J. Forbes & Hemsl.
Aconitum wilsonii

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Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Clay
Loam
Chalk
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Green
Autumn Blue Purple Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

East–facing or North–facing or West–facing

Exposure
Sheltered
Hardiness
H7
Botanical 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

Correct

Plant range
C & W China, N. America

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, staking may be required; use protective gloves

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

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

May be susceptible to aphids

Diseases

May be susceptible to fungal stem rot and Verticillium wilt

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