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Herbaceous Perennial

Aconitum carmichaelii 'Royal Flush'PBR
  • RHS Plants for pollinators

monk's hood 'Royal Flush'

A compact perennial to 60cm tall with glossy divided leaves coloured bronze-red in spring before turning a deep green. Upright spikes of dark blue, hooded flowers are borne from early to mid autumn

Synonyms
Aconitum carmichaelii 'Redleaf'
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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Clay
Loam
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Bronze Red
Summer Green
Autumn Blue Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

North–facing or West–facing or East–facing

Exposure
Sheltered
Hardiness
H7
Botanical 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

Best grown in moisture-retentive fertile soil in partial shade but sun and most soils are tolerated.

Propagation

Propagate by division in autumn or late winter to maintain vigour, although plants can be slow to re-establish. Use gloves when handling plants

Suggested planting locations and garden types
  • Cottage and informal garden
  • Wildlife gardens
  • Flower borders and beds
Pruning

Tall stems can be pruned down later in autumn when flowering is finished

Pests

May be susceptible to aphids

Diseases

May be susceptible to fungal stem rot and Verticillium wilt

Get involved

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