Verbena lasiostachys

RHS Plant Profile
western vervain

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Other common names

western vervain

Plants for pollinators
Herbaceous Perennial

A fast-growing, bushy perennial to around 30cm in height, with rough-textured, toothed, oblong-shaped dark green foliage. Dense clusters of small, lavender-purple flowers appear on branching stems from summer through to the autumn

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Chalk Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
East–facing or South–facing or West–facing
Exposure
Sheltered
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)
H4
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Verbenaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus
Verbena can be annuals, perennials or sub-shrubs, with toothed or pinnately lobed leaves and small, usually 5-petalled, salver-shaped flowers, typically held in spikes or panicles, in summer or autumn
Name Status
Correct

How to Grow

Cultivation

Grow in well-drained soil in a sheltered postition in full sun. Add a deep, dry mulch at the onset of winter. Cut back stems to ground level in early spring

Propagation

Propagate by seed or propagate by stem cuttings in spring

Suggested planting locations and garden types

  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Wildlife gardens
  • Flower borders and beds

Pruning

Cut down in spring as new growth emerges from the base; deadhead in autumn if seed is not required

Pests

May be susceptible to aphids, Thrips and leafhoppers

Diseases

May be susceptible to Powdery mildews