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Caucasian Wingnut

Pterocarya fraxinifolia

Also called Caucasian Walnut

Caucasian Wingnut
Photo: Liné1, CC BY-SA 3.0

A fast-growing, large tree from the Caucasus and northern Iran, valued for its ornamental pinnate leaves and dangling winged fruit catkins. It needs deep, moist soil and a large site, so it suits parks and gardens rather than small yards.

Family
Juglandaceae (Walnut family)
Grows as
Tree
Light
Full sun, Part shade
Water
Water regularly during dry spells, especially when young; it prefers consistently moist soil.
Soil
Deep, fertile, moist but well-drained loam; tolerates wet ground near rivers.
Temperature
Hardy to around -20 °C; prefers mild winters and mild, humid summers.
How easy
Easy
Native range
Türkiye to NW. & N. Iran
Climate
temperate

About

Pterocarya fraxinifolia is a species of tree in the Juglandaceae family. It is commonly known as the Caucasian wingnut or Caucasian walnut. It is native to the Caucasian region Armenia, Azerbaijan, Georgia, Iran, Russia, Ukraine and Turkey. It was introduced to France in 1784, and to Great Britain after 1800.

Where it grows

The species is fast growing and grows best on flat ground or shallow slopes near river banks and in deep moist soils. The climate associated with the distribution of this tree includes mild winters and mild humid summers. It generally grows in mixed stands with other species and rarely grows in pure stands.

Other Pterocarya plants

Hubei Wingnut · Large Winged Wingnut · Japanese Wingnut · Chinese Wingnut · Tonkin Wingnut · Wingnut

Text excerpted from the Wikipedia article Pterocarya fraxinifolia by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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