• 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

Hydrangea macrophylla 'Mariesii Perfecta' (L)

hydrangea 'Mariesii Perfecta'

  • Other common names hydrangea 'Mariesii Perfecta'

  • Synonyms Hydrangea 'Blue Wave'
    Hydrangea macrophylla 'Blue Wave'

  • Family Hydrangeaceae

  • Genus Hydrangea can be deciduous or evergreen shrubs, or self-clinging climbers, with flowers in clusters usually comprising both small fertile and more showy sterile flowers; often good autumn colour

  • Horticultural Group Lace cap hydrangeas are compact deciduous shrubs with broadly ovate leaves and flat or gently domed clusters of small fertile flowers, with showy sterile flowers around the margin

  • Details 'Mariesii Perfecta' is a small deciduous shrub with rather glossy, light green leaves. Lace-cap flower-heads with blue fertile flowers surrounded by large, blue or pink ray florets

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • Toxicity May cause mild stomach upset if ingested, contact with foliage may aggravate skin allergies

  • 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)

    H5

Colour

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Exposed or Sheltered

Soil

  • Clay

    Clay

  • Sand

    Sand

  • Loam

    Loam

  • MoistureWell-drained, Moist but well-drained

  • SoilClay, Sand, Loam

  • pHNeutral, Acid

Size

  • Ultimate height 1-1.5 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Grow in moist but well-drained soil in sun or partial shade

Propagation Propagate by softwood cuttings

Suggested planting locations and garden types Flower borders and beds Low Maintenance City & Courtyard Gardens Patio & Container Plants Cottage & Informal Garden

How to care

Pruning Pruning group 1

Pests Can get aphids, capsid bug, glasshouse red spider mite and hydrangea scale

Diseases Generally disease free

Did you find the information you were looking for?

RHS members can get exclusive individual advice from the RHS Gardening Advice team.

Join the RHS now

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.