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Pterocarya fraxinifolia

Caucasian wingnut

A vigorous, broadly spreading deciduous tree with large pinnate leaves and small green flowers in drooping racemes to 50cm long, followed by winged fruits

Other common names
Caucasian walnut
Synonyms
Pterocarya pterocarpa
Pterocarya caucasica
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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
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Green
Summer Green Green
Autumn
Winter
Position
  • Full sun
Aspect

West–facing or South–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Juglandaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus

Pterocarya are tall deciduous trees with large pinnate leaves and tiny flowers in pendulous catkins, followed by spikes of winged fruits

Name status

Correct

Plant range
E Turkey, N Iran, Caucasus

How to grow

Cultivation

Grow in deep, fertile, moist but well-drained soil in full sun

Propagation

Propagate by seed in containers outdoors in autumn. Remove rooted suckers in autumn

Suggested planting locations and garden types
  • Architectural
  • Cottage and informal garden
Pruning

Pruning group 1; remove unwanted suckers and seedlings as they appear

Pests

Generally pest-free

Diseases

May be susceptible to honey fungus

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