• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Verbena officinalis var. grandiflora 'Bampton'

vervain 'Bampton'

vervain 'Bampton'

© RHS

  • Other common names vervain 'Bampton'

  • Family Verbenaceae

  • 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

  • Details 'Bampton' is a bushy, upright perennial with fine, wiry branches bearing deep purple foliage and, from mid-summer to mid autumn, short spikes of small purplish-pink flowers

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • 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)

    H6

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing or East-facing

  • Exposure Exposed or Sheltered

Soil

  • Sand

    Sand

  • Chalk

    Chalk

  • Loam

    Loam

  • MoistureWell-drained, Moist but well-drained

  • SoilSand, Chalk, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.5-1 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 1-2 years

How to grow

Cultivation Grow in a moist but well-drained, moderately-fertile soil in full sun

Propagation Propagate by division or softwood cuttings

Suggested planting locations and garden types Banks and Slopes Drought Resistant Flower borders and beds Low Maintenance Wall-side Borders Architectural City & Courtyard Gardens Coastal Cottage & Informal Garden Gravel Garden Prairie Planting

How to care

Pruning Cut down after flowering

Pests Generally pest free

Diseases Generally disease free

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