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Acer macrophyllum

Oregon maple

A large, round-headed tree with deeply-lobed, dark green leaves up to 30cm across that turn shades of orange and yellow in autumn. Small, fragrant, yellowish-green flowers are borne in drooping clusters 10-20cm long in spring and followed by bristly, winged fruit

Other common names
big leaf maple
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Size
Ultimate height
Higher than 12 metres
Time to ultimate height
20–50 years
Ultimate spread
Wider than 8 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Yellow Green Green
Summer Green
Autumn Yellow Orange
Winter
Position
  • Full sun
  • Partial shade
Aspect

East–facing or North–facing or South–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Sapindaceae
Native to the UK
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

Correct

How to grow

Cultivation

Grows best in a moist but well-drained soil in full sun or partial shade but will tolerate a wide range of conditions

Propagation

Propagate by seed

Suggested planting locations and garden types
  • 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

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