Black Walnut
Juglans nigra
Family: JuglandaceaeNative: Eastern and central North AmericaIdentified: Sep 5, 2025
The Black Walnut tree produces compound leaves, typically 1 to 2 feet long, with 15-23 ovate leaflets. The leaflets are finely toothed and have a distinct aromatic scent when crushed. The tree itself can grow quite large, reaching heights of 75-100 feet.
Learn more about Black Walnut in the encyclopedia →Care instructions
Black Walnuts thrive in deep, rich, well-drained soils, often preferring floodplains and moist fertile uplands. They require full sun exposure. Once established, they are relatively drought-tolerant. Care should be taken when planting other plants nearby due to juglone, a chemical produced by the tree that can be toxic to many other species.