• 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

Spiraea japonica 'Anthony Waterer' (v)

Japanese spirea 'Anthony Waterer'

Japanese spirea 'Anthony Waterer'

© RHS

  • Other common names Japanese spirea 'Anthony Waterer'

  • Synonyms Spiraea × bumalda 'Anthony Waterer'

  • Family Rosaceae

  • Genus Spiraea are deciduous shrubs, sometimes suckering, with simple leaves and short racemes, panicles or corymbs of small, 5-petalled white or pink flowers in spring or summer

  • Details 'Anthony Waterer' is an upright deciduous shrub with narrowly lanceolate leaves, often irregularly variegated with cream and pink, and domed clusters of deep rosy-pink flowers in late summer

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

  • Partial Shade

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

  • Exposure Sheltered or Exposed

Soil

  • Loam

    Loam

  • Chalk

    Chalk

  • Sand

    Sand

  • MoistureWell-drained, Moist but well-drained

  • SoilLoam, Chalk, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 1-1.5 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Easy to grow in most moist soils, tolerant of all but the most extreme conditions. Especially suitable for mixed borders

Propagation Propagate by softwood cuttings in summer or by division in autumn or spring

Suggested planting locations and garden types Low Maintenance Banks and Slopes Flower borders and beds Cottage & Informal Garden

How to care

Pruning Pruning group 6. If overgrown, can be renovated by cutting back hard immediately after flowering

Pests Generally pest free

Diseases Generally disease free

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