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Herbaceous Perennial

Verbascum bombyciferum
  • RHS Plants for pollinators

Broussa mullein

A biennial, or short-lived, evergreen perennial covered with silky, silver hairs. The basal rosette of leaves may be up to 60cm across; the sulphur yellow flowers, 4cm across, are sparsely borne on a densely woolly stem up to 1.8m tall, in summer

Synonyms
Verbascum 'Broussa'

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Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Loam
Moisture
Well–drained
pH
Alkaline
Colour & scent
StemFlowerFoliageFruit
Spring Grey Silver
Summer White Yellow Grey Silver
Autumn Grey Silver
Winter Grey Silver
Position
  • Full sun
Aspect

South–facing

Exposure
Exposed
Drought resistance
Yes
Hardiness
H6
Botanical details
Family
Scrophulariaceae
Native to GB / Ireland
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

Plant range
Turkey

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

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
  • Gravel garden
  • Cottage and informal garden
  • Wildlife gardens
  • 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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