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Herbaceous Perennial

Verbascum nigrum
  • RHS Plants for pollinators

dark mullein

A rosette-forming, deciduous or semi-evergreen perennial about 90cm tall, with scalloped, long-stalked, mid to dark green leaves, slightly grey-woolly beneath, making basal clumps that produce slender racemes of warm yellow flowers with purple stamens at their centres, from midsummer to early autumn

Other common names
black-rooted mullein
tall mullein
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Size
Ultimate height
0.5–1 metres
Time to ultimate height
1–2 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Yellow Green
Autumn Yellow Green
Winter Green
Position
  • Full sun
Aspect

South–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Scrophulariaceae
Native to the UK
Yes
Foliage
Deciduous or Semi evergreen
Habit
Clump forming
Genus

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

Name status

Correct

Plant range
Europe, Asia

How to grow

Cultivation

Usually found on calcareous, free-draining sites or disturbed ground in a sunny location. Mulleins are beneficial to wildlife as a pollen and nectar source when in flower, seeds are a food source for birds and in winter hollow stems act as a refuge for insects

Propagation

Propagate by seed or by root cuttings in winter

Suggested planting locations and garden types
  • Wildlife gardens
  • Wildflower meadow
Pruning

No pruning required

Pests

May be susceptible to mullein moth

Diseases

Generally disease-free

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