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Acer japonicum 'Green Cascade'
  • RHS AGM

downy Japanese maple 'Green Cascade'

A deciduous large shrub or small tree, with a cascading, weeping habit and rounded, deeply cut, 9-11 lobed rich green leaves to 10cm long, brilliantly coloured red, orange and yellow in autumn. Bears long stalked clusters of red-purple flowers in spring as the leaves open, followed by brownish-red winged fruits

Synonyms
Acer palmatum 'Green Cascade'

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Size
Ultimate height
2.5–4 metres
Time to ultimate height
10–20 years
Ultimate spread
2.5–4 metres
Growing conditions
Clay
Loam
Sand
Chalk
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Red Purple Green
Summer Green Brown
Autumn Orange Red Yellow
Winter
Position
  • Full sun
  • Partial shade
Aspect

East–facing or North–facing or West–facing

Exposure
Sheltered
Hardiness
H6
Botanical details
Family
Sapindaceae
Native to the UK
No
Foliage
Deciduous
Habit
Pendulous weeping
Genus

Acer can be deciduous trees or large shrubs with paired, often palmately-lobed leaves and small flowers followed by characteristic winged fruits. Many have fine autumn colour, and some have ornamental stems

Name status

Accepted

How to grow

Cultivation

Grow in fertile, moist but well-drained soil in sun or partial shade. See tree cultivation for further advice

Propagation

Propagate by layering in autumn, grafting in late winter or softwood cuttings in early summer

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
Pruning

Pruning group 1, if necessary, from late autumn to midwinter only. Train leading shoot vertically when young to obtain a weeping habit

Pests

May be susceptible to Acer gall mite, aphids, caterpillars and horse chestnut scale

Diseases

May be susceptible to Verticillium wilt, Acer leaf scorch and honey fungus

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