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About Juglans ailantifolia (Japanese walnut)

Juglans ailantifolia - Japanese walnut - Large park tree with broad, round crown, up to 20 m tall and broad. The first-year twigs are densely covered with glandular hairs, but have hardly any hairs in their second year. The large, imparipinnate leaves are 40 - 60 cm long and up to 90 cm long in young, vigorously growing trees. They consist of 11 to 17 dark green leaf segments and the leaf margins have shallow serrations. The male flower catkins can be 25 cm long. The flowers appear in May, soon after the leaves emerge. The fruits hang in clusters of up to 20. The husks carry sticky hairs. The nut has a short, pointed tip and a fairly thick membrane where the two halves meet. Grows on almost any soil, as long as fertile. Does need space to develop a good, regular crown. Family: Juglandaceae

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