Not the plant you're looking for? Search over 300,000 plants
Herbaceous Perennial

Aconitum carmichaelii (Arendsii Group) 'Cloudy'PBR
  • RHS Plants for pollinators

monk's hood 'Cloudy'

A tall growing, herbaceous perennial, producing branched panicles of white hooded flowers flushed with pale puple-blue. These appear during autumn on stems that can reach over 1.5m high, above dark green, leathery, palmate to deeply-divided, lobed foliage

Synonyms
Aconitum 'Cloudy'
Buy this plant
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 Purple White Green
Autumn Purple White Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

East–facing or South–facing or West–facing

Exposure
Sheltered
Hardiness
H7
Botanical details
Family
Ranunculaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Columnar upright
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. Staking may be necessary. See staking perennials for further advice

Propagation

Divide 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
  • Wildlife gardens
  • Architectural
  • 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

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.