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AGM plants have been through a rigorous trial and assessment programme. They are:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
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Other common names Boston ivy Japanese creeper
Japanese ivy
Synonyms Acer nikoense Ampelopsis hoggii
Vitis inconstans Ampelopsis tricuspidata
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
Foliage Deciduous
Habit Climbing
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H5
Full Shade
Full Sun
Partial Shade
Aspect South-facing or East-facing or North-facing or West-facing
Exposure Exposed or Sheltered
Chalk
Clay
Loam
Sand
MoistureMoist but well-drained, Well-drained
SoilChalk, Clay, Loam, Sand
pHAcid, Alkaline, Neutral
Ultimate height Higher than 12 metres
Ultimate spread wider than 8 metres
Time to ultimate height 5-10 years
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
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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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.