Pterocarya fraxinifolia
Caucasian wingnut · also Caucasian walnut
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Pterocarya fraxinifolia, commonly known as Caucasian Wingnut, is a large deciduous tree native to the Caucasus region and northern Iran. It is characterized by its winged fruits which aid in dispersal. This species prefers moist, well-drained soils but shows moderate drought tolerance and develops an invasive root system with suckers.
Where it grows
Trees in each city's inventory, with the share of that city's named trees this species accounts for.
- 1,7490.62%54 yr30 in
- 7380.32%—13 in
- 3970.03%—5.2 in
- 390.08%12 yr—
- 140.00%30 yr23 in
- 90.06%—19 in
- 70.00%—11 in
- 30.00%—2.0 in
- 10.00%—25 in
Traits
- Foliage
- Deciduous
- Mature height
- 25–30 ft
- Canopy spread
- 30–60 ft
- Soil
- Well-drained, Moist
- Water needs
- Moderate
- Drought tolerance
- Moderate
- Roots
- Invasive
- Wildlife value
- Moderate
- Blooms
- Mar, Apr, May, Jun, Jul, Aug
Trunk diameters across every city: median 13 in, mean 17 in, 90th percentile 30 in. Measured at breast height, as published by each inventory.
Native range
Terrestrial ecoregions where this species is native. Trees in the dataset mostly stand well outside it.
Temperate Broadleaf & Mixed Forests
- Caucasus mixed forests
Temperate Conifer Forests
- Elburz Range forest steppe
Other Pterocarya in the catalogue
5 of the top 2,000 species are in this genus.
