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Acer japonicum 'Aconitifolium' AGM

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© RHS 2002

Characteristics

Plant type

Tree or Shrub

Habit

Bushy

Resilience

Hardiness

H6 (hardy - very cold winter)

Colour

Flower

Red in Spring

Foliage

Green in Spring and Summer
Red in Autumn

Fruit

Green in Autumn

Size

Ultimate height

4-8 metres

Ultimate spread

4-8 metres

Time to ultimate height

10-20 years


Preferred common name

downy Japanese maple 'Aconitifolium'

Family

Sapindaceae


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

'Aconitifolium' is a large bushy deciduous shrub or small tree. Leaves rounded, with 7-11 deeply cut main lobes, turning crimson in autumn. Flowers red, hanging beneath the shoots in spring

Synonym(s)

  • Acer japonicum 'Aconitifolium Maiku Jaku'
  • Acer japonicum 'Filicifolium'
  • Acer japonicum 'Laciniatum'
  • Acer japonicum Meigetsu
  • Acer parsonii
  • Acer shirasawanum 'Lacinatum'

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

  • South-facing, West-facing or East-facing
  • Sheltered

Cultivation

Grow in a moist but well-drained soil. Water in summer if necessary. Leaf colour is best in partial shade, although full sun can be tolerated. Leaf scorch can be caused by lack of soil moisture or excessive exposure

Soil

  • Moist but well-drained
  • Acid or Neutral
  • Loam, Clay, Sand or Chalk

Propagation

Propagate by grafting or softwood cuttings

Suggested planting locations and garden types

Architectural or Low Maintenance


How to care

Pruning

Pruning group 1

Pests

Aphids and horse chestnut scale may be a problem

Diseases

Verticillium wilt is sometimes a problem