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Annual Biennial

Verbascum blattaria f. albiflorum
  • RHS Plants for pollinators

white-flowered moth mullein

A biennial with crinkly, lobed, dark green leaves producing an evergreen basal rosette up to 40cm across. A narrow, branched flower spike, to 1.2m tall, produces widely-spaced, white blooms with pink flushing and purple centres from early summer to early autumn

Synonyms
Verbascum blattaria alba
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Size
Ultimate height
1–1.5 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 Purple White Green
Autumn Purple White Green
Winter Green
Position
  • Full sun
Aspect

South–facing

Exposure
Exposed
Drought resistance
Yes
Hardiness
H6
Botanical details
Family
Scrophulariaceae
Native to the UK
No
Foliage
Evergreen
Habit
Columnar upright
Genus

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

Name status

Correct

How to grow

Cultivation

Grow in poor, alkaline, well-drained soil in full sun. A drought-tolerant plant, it grows large and needs support in fertile soils (see staking perennials)

Propagation

Propagate by seed sown in containers in a cold frame in spring or early summer, or by root cuttings in winter

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

Remove faded flower spikes

Pests

May be susceptible to mullein moth caterpillars and figwort weevil

Diseases

May be susceptible to powdery mildews

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