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Herbaceous Perennial

Verbascum 'Petra'

mullein 'Petra'

A rosette-forming, short-lived, semi-evergreen perennial to 1m with hairy, crinkled, greyish-green foliage. Substantial spires of saucer-shaped, terracotta flowers open from purple buds from early summer through to autumn

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Ultimate height

0.5–1 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Chalk

Loam

Sand

Moisture

Well–drained

pH

Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing

Exposure

Exposed or Sheltered

Drought resistance

Yes

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Scrophulariaceae
Native to the UK: No
Foliage: Semi 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: Unresolved

How to grow

Cultivation

Grow in alkaline, poor, well-drained soil in a sunny position. Plants grown in fertile soil may need support, see staking perennials

Propagation

Propagate by division in spring or take root cuttings in winter

Suggested planting locations and garden types

Cottage and informal garden
Gravel garden
City and courtyard gardens
Flower borders and beds
Cut flowers

Pruning

Remove faded flower spikes

Pests

May be susceptible to caterpillars, including mullein moth, and to figwort weevils

Diseases

May be susceptible to Powdery mildews

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