Juglans nigra--Black Walnut

By The Old House Web

Juglans nigra--Black Walnut

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Black Walnut grows 100 to 150 feet and spreads 60 to 120 feet. Best growth occurs in a sunny open location and a moist rich soil. The tree grows rapidly when young but slows down with age. While valued as a lumber tree it may not make the best yard tree. The nuts are edible but are a mess to clean up. Black walnut roots contain juglone which kills the roots of other plants when the root touch. Plants such as tomato and evergreens are quite sensitive to juglone.

One cultivar is listed; 'Laciniata'--cut leaflets.

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