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Juglans nigra
Black walnut

Black walnut (Juglans nigra) is a large, fast-growing deciduous tree native to large parts of the eastern United States. It was introduced to Europe in the 17th century, where it was widely cultivated for its ornamental attributes and for timber production, especially in eastern and central Europe. As a result, the tree is now naturally found in some areas of Europe. In addition, the species is occasionally found hybridized with the common walnut (Juglans regia).

The fine wood of black walnut is heavy, strong and durable. It is highly valued and used for cabinets, furniture, veneer, gun-stocks and, historically, for shipbuilding and airplane propellers. The tree’s seeds are edible and have a sweet flavour, making them useful in confectionery. They are, however, not as easy to extract as those of the common walnut (Juglans regia) (the species usually cultivated for the walnut). The black walnut’s bark and leaves are used in medicinal treatments for numerous health conditions. Its seeds are also consumed by various rodents and birds.

Black walnut is usually found in deep, well-drained, moist soils along streams, in open locations and on hillsides up to 1000 m. The tree requires abundant sun and is not tolerant to root disturbance or shade. 

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