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Acer negundo

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© RHS 2002

Characteristics

Plant type

Tree

Habit

Columnar/Upright

Resilience

Hardiness

old H4 (hardy)

Colour

Flower

Green in Spring

Foliage

Green in Spring and Summer
Yellow in Autumn

Size

Ultimate height

Higher than 12 metres

Ultimate spread

wider than 8 metres

Time to ultimate height

10-20 years


Preferred common name

box elder

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

A. negundo is a vigorous deciduous tree with pinnate leaves on green young shoots, male and female flowers on separate plants; yellow autumn colour

Other common names

  • ashleaf maple
  • ash-leaved maple

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

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

Cultivation

Grow in a moist but well-drained soil

Soil

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

Propagation

Propagate by seed or grafting

Suggested planting locations and garden types

Architectural, City/Courtyard Gardens, Cottage/Informal Garden, Low Maintenance or Patio/Container Plants


How to care

Pruning

Pruning group 1

Pests

Aphids and horse chestnut scale may be a problem

Diseases

Verticillium wilt may be a problem