Black Walnut (Juglans nigra)


Quick Facts

  • Native Americans and early settlers in the United States used it for for food, dye, medicine, and ink.
  • Produces the toxic chemical jugulone which can damage many common garden plants
  • Prized in woodworking due to its unique grain


They have alternate leaves, which are pinnately compound and 12–24 inches long. They consist of 15–23 dark green leaflets that are 2–5 inches and finely toothed. They tend to grow anywhere from 50-75 feet in heigh and produce a fleshy nut containing fruit starting from early to mid autumn. The nuts will usually not develop until the tree is 12-15 years old. It is a difficult tree to transplant from one place to another due to its long taproot.