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Hydrangea paniculata

paniculate hydrangea

Sold by 5 nurseries

  • Other common names paniculate hydrangea

  • Synonyms Hydrangea 'Pee Gee'

  • 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

  • Details H. paniculata is a deciduous woody plant with toothed, mid to dark green leaves in opposite pairs or clusters of 3, and flowerheads in large, conical panicles, produced in late summer and early autumn, made up of showy, pinkish-white sterile flowers scattered amongst the smaller creamy-white fertile flowers

  • Plant range E Asia

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 North-facing or West-facing or South-facing or East-facing

  • Exposure Exposed or Sheltered

Soil

  • Chalk

    Chalk

  • Clay

    Clay

  • Loam

    Loam

  • Sand

    Sand

  • MoistureMoist but well-drained, Well-drained

  • SoilChalk, Clay, Loam, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 2.5-4 metres

  • Ultimate spread 1.5-2.5 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Grow in fertile, humus-rich, moist but well-drained soil in full sun or partial shade with shelter from cold drying winds

Propagation Propagate by seed in containers in a cold frame in spring; propagate by softwood cuttings in early summer or hardwood cuttings in winter

Suggested planting locations and garden types Flower borders and beds Wall-side Borders City & Courtyard Gardens Coastal Cottage & Informal Garden

How to care

Pruning Pruning group 1 or Pruning group 6

Pests Aphids, capsid bug, vine weevil and hydrangea scale may be a problem

Diseases May be subject to a leaf spot, powdery mildew, grey moulds (Botrytis) and honey fungus

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