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Annual BiennialHerbaceous Perennial

Verbascum luridiflorum 'Blue Lagoon'PBR
  • RHS Plants for pollinators

mullein 'Blue Lagoon'

A biennial or short-lived perennial producing upright stems to 75cm, growing from a rosette of basal leaves. Flowers are borne in loose spikes, opening in flushes throughout the summer. Petals of the flat flowers are blue, the centre of the flower and the protruding stamens are purplish with flecks of white

Synonyms
Verbascum 'Blue Lagoon'
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Size
Ultimate height
0.5–1 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Loam
Moisture
Well–drained
pH
Alkaline
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Blue Green
Autumn
Winter
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H4
Botanical details
Family
Scrophulariaceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
Genus

Verbascum can be annuals, biennials, perennials or subshrubs mostly with hairy leaves and 5-petalled, saucer-shaped flowers

Name status

Accepted

How to grow

Cultivation

Requires an alkaline, well-drained, poor soil in full sun. In fertile soil plants grow larger and need staking - see staking perennials

Propagation

Propagate by root cuttings in winter, or division in spring

Suggested planting locations and garden types
  • Coastal
  • City and courtyard gardens
  • Cottage and informal garden
  • Gravel garden
  • Wildlife gardens
  • Flower borders and beds
Pruning

Cut back old flower stems once flowering has finished

Pests

Figwort weevil and some moth caterpillars may be a problem

Diseases

Prone to powdery mildew

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