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Fraxinus mandshurica
Also called Japanese Ash
Manchurian ash is a medium to large deciduous tree from northeastern Asia, reaching about 30 m, grown as a landscape and windbreak tree. It does best in full sun, moist soils and a continental climate with cold winters and hot summers.
Fraxinus mandshurica, or the Manchurian ash, is a species of Fraxinus native to northeastern Asia in northern China (Gansu, Hebei, Heilongjiang, Henan, Hubei, Jilin, Liaoning, Shaanxi, Shanxi), Korea, Japan and southeastern Russia (Sakhalin Island).
It is a medium-sized to large deciduous tree reaching 30 m tall, with a trunk up to 50 cm in diameter. The leaves are 25–40 cm long, pinnate compound, with 7–13 leaflets, the leaflets 5–20 cm long and 2–5 cm broad, subsessile on the leaf rachis, and with a serrated margin. They turn to a golden-yellow in early autumn, and the tree is usually early to change color. The flowers are produced in early spring, before the new leaves, in compact panicles; they are inconspicuous with no petals, and are wind-pollinated. The fruit is a samara comprising a single seed 1–2 cm long with an elongated apical wing 2.5–4 cm long and 5–7 mm broad.
It is tolerant of many soil conditions including the wet soils of swamps and river valleys, and is not particular as to soil pH except for showing poor growth at high pH. It requires full sun for optimal growth, and should receive at least 50 cm of precipitation each year. It requires a continental climate with well-defined seasons with cold winters, hot summers, and freedom from late spring frosts.
This tree is occasionally cultivated as an ornamental tree in parts of Canada and the United States. Manchurian ash can be used as a medium height wind break for a farmstead. It is also highly tolerant of urban pollution and will even grow well in inner city environments. The tree also makes an excellent landscape tree in moist areas, especially along roads and ditches where a good amount of water can be available. The Manchurian grows into a denser oval form with age.
White ash · European ash · Gregg's ash · Formosan Ash · Manna Ash · Green ash · Fraxinus platypoda · Chinese Flowering Ash · Velvet ash · Ash
Text excerpted from the Wikipedia article Fraxinus mandschurica 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.
