Acer wilsonii

RHS Plant Profile
Wilson's maple

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Synonyms

Acer campbellii subsp. wilsonii
Acer angustilobum

Trees
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A spreading tree up to 15m tall. The broad, three to five lobed leaves open with a hint of bronze in the spring and mature to a dark green, to then put on a cheerful autumn display of yellow. Hanging clusters of small, red and white flowers appear in April followed by green and pink, two-winged fruit in October

Position

Full sun, Partial shade

Soil Types

Clay, Loam, Sand

Size

Time to Maturity
20–50 years

Growing Conditions

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

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–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)
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Sapindaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy, Spreading branched
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
Correct
Plant Range
SW China

How to Grow

Cultivation

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

Propagation

Propagate by seed (trees and shrubs), layering in autumn, grafting in late winter or softwood cuttings in early summer

Suggested planting locations and garden types

  • Cottage and informal garden
  • Flower borders and beds

Pruning

Pruning group 1 if necessary, from late autumn to midwinter only

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