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Acer spicatum

mountain maple

A small, deciduous shrubby tree to about 6-8m tall, with a short trunk and downy shoots. Long, pointed 3-5 lobed mid-green leaves turn brilliant red and yellow in autumn. Dense greenish-yellow flowers in slender upright panicles in early summer are followed by slender racemes of red winged fruits

Other common names
spike-flowered maple
Synonyms
Acer montanum

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Size
Ultimate height
4–8 metres
Time to ultimate height
10–20 years
Ultimate spread
2.5–4 metres
Growing conditions
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Yellow Green Green
Autumn Red Yellow Red
Winter
Position
  • Full sun
  • Partial shade
Aspect

East–facing or South–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H7
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

Correct

Plant range
E N America

How to grow

Cultivation

Grow in fertile, moist but well-drained neutral to acid soil in sun or partial shade. See tree 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
  • Wildlife gardens
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

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