Acer shirasawanum 'Autumn Moon'

RHS Plant Profile
Shirasawa maple 'Autumn Moon'

Synonyms

Acer 'Autumn Moon'
Acer palmatum 'Autumn Moon'

Trees

A bushy tree or large shrub, up to about 6m high, with grey-brown bark, and rounded eleven-lobed leaves about 6cm across. Leaves are clear yellow or yellowish-green, but in full sun are green with yellowish veins; in both situations they are tinged burnt-orange and turn orange-red in autumn. Cream and pink flowers, in spring, are held in upright spreading clusters, and are followed by winged near-horizontal greenish-brown fruits about 2cm across

Position

Full sun, Partial shade

Soil Types

Clay, Loam, Sand

Max Height

4-8 metres

Max Spread

4-8 metres

Size

Time to Maturity
20–50 years
Max Spread
4-8 metres
Max Height
4-8 metres

Growing Conditions

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

Position

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

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

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

How to Grow

Cultivation

Grow in moist but well-drained acidic or neutral soil in partial shade or full sun; for more advice, see Japanese maple cultivation

Propagation

Propagate by softwood cuttings

Suggested planting locations and garden types

  • Patio and container plants
  • City and courtyard gardens
  • Cottage and informal garden
  • Low Maintenance

Pruning

Pruning group 1 (little or no pruning of trees and shrubs)

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