Juglans nigra
Black Walnut
Common names: American Walnut
Photo: R. A. Nonenmacher · CC BY-SA 4.0 · Source
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Description
The black walnut is a large, fast-growing tree native to North America, prized for its dark, valuable timber and small, intensely aromatic nuts. Like all walnut relatives, it releases juglone through its roots and leaves, which can inhibit sensitive neighboring plants such as tomatoes, potatoes, and apples. It is best planted in isolation.
Care instructions
Plant the black walnut in a sunny location with deep, nutrient-rich, and moist soil, as it grows very large and requires ample space. Sow in the fall (November, week 44) and keep the root zone moist during the first few years. Harvest the nuts in October (week 42); the thick, darkening outer shell must be removed with gloves.
Pruning
Companion planting
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