Acer japonicum 'Aconitifolium'

RHS Plant Profile
downy Japanese maple 'Aconitifolium'

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downy Japanese maple 'Aconitifolium' RHS 2002
downy Japanese maple 'Aconitifolium' visionspictures.com

Synonyms

Acer japonicum 'Aconitifolium Maiku Jaku'
Acer japonicum 'Filicifolium'
Acer japonicum 'Laciniatum'
Acer palmatum 'Meigetso'
Acer japonicum 'Mai-kujaku'
Acer shirasawanum 'Lacinatum'
Acer japonicum Meigetsu
Acer parsonii

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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

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

4-8 metres

Max Spread

4-8 metres

Size

Time to Maturity
10–20 years
Max Spread
4-8 metres
Max Height
4-8 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Neutral

Position

Full sun Partial shade
Aspect
South–facing or West–facing or East–facing
Exposure
Sheltered
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)
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Sapindaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
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 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

Propagation

Propagate by grafting or softwood cuttings

Suggested planting locations and garden types

  • Architectural
  • Low Maintenance

Pruning

Pruning group 1

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