Black Walnut Trees

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About Black Walnut Trees: Black walnut is a large, moderately growing, majestic tree. Prized for its wood veneer at maturity; used in fine cabinets, gunstocks, and furniture. Makes a wonderful shade tree, and when planted for a wood plantation, a long-term investment. Has moderate water requirements, and shows a moderate tolerance to salt and alkali soils. The Black Walnut will grow slower if exposed to droughty periods but is tolerant to drought. It has massive, upright spreading, open branches and it will lose its lower branches toward maturity.

Black Walnut picture
Black Walnut
Black Walnut Tree Facts
Scientific Name:
Juglans nigra
Foliage:
Dark Green Leaves
Mature Height:
60-75 Feet
Mature Spread:
50-60 Feet
Soil:
clay, loam
Zones:
4-8
Moisture:
moderate

The Black Walnut is a dependable producer of extra large crops for many years. The nuts are large and plump and crack out of the shell easily. The roots of the black walnut produce a substance known as juglone (5-hydroxy-alpha-napthaquinone). This biochemical is toxic to many plants such as the tomato, potato, black and blue berries, and other plants that may grow within a 50 to 60 foot radius of the trunk. Not all plants are sensitive to juglone and many trees, vines, shrubs, and flowers will thrive in close proximity to a black walnut tree.

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