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Parthenocissus tricuspidata

Boston ivy

Boston ivy

© RHS 2002

8 suppliers

  • Other common names Boston ivy
    Japanese creeper

    Japanese ivy

    see more

  • Synonyms Ampelopsis hoggii
    Ampelopsis tricuspidata

    Vitis inconstans

    see more

  • Family Vitaceae

  • Genus Parthenocissus are vigorous deciduous climbers with either tendrils or disk-like suckers, and lobed or palmate leaves which often colour brilliantly in autumn. Inconspicuous green flowers are sometimes followed by attractive blue or black berries

  • Details P. tricuspidata is a very vigorous, self-clinging large deciduous climber. Leaves mostly ovate or three-lobed, turning brilliant crimson and purple in autumn. Flowers inconspicuous; berries dull blue

  • Plant range China, Japan

Characteristics

  • Foliage Deciduous

  • Habit Climbing

  • 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

  • Full Shade

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

  • Exposure Sheltered or Exposed

Soil

  • Chalk

    Chalk

  • Clay

    Clay

  • Sand

    Sand

  • Loam

    Loam

  • MoistureMoist but well-drained, Well-drained

  • SoilChalk, Clay, Sand, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height Higher than 12 metres

  • Ultimate spread wider than 8 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation For the best autumn colour, site in partial shade or full shade. It thrives in any fertile, well-drained soil

Propagation Propagate by layering or hardwood cuttings

Suggested planting locations and garden types Wall-side Borders

How to care

Pruning Pruning group 11 in early winter, can also be cut back in summer if need be

Pests May get glasshouse red spider mite and vine weevil

Diseases Generally disease free

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