· black walnut (juglans nigra) produces juglone, which inhibits the growth of some other plants. The best method depends on the size of the tree, your budget, and your tolerance for chemicals. Natural and chemical. · learn how to find, gather, clean, and crack wild black walnuts , one of the most abundant wild food species in central and eastern north america! Just like the name implies, they produce walnuts, making them very valuable plants. · there are several options for black walnut removal , ranging from simple to more involved. The bark is dark and deeply furrowed, and the nuts are round, hard, and enclosed in a thick, green husk that turns black when ripe. Learn how to identify and remove the tree if necessary. Black walnut trees (juglans nigra) are distinctive in several ways. Identifying this species requires observing a combination of features, including the trunk’s texture, the leaves’ structure, and the fruit’s unique characteristics. You can usually find them in forests stretching from the east coast of the united states to the midwest. This large deciduous tree can reach heights of 75 to 100 feet. They typically have compound leaves with 15 to 23 leaflets arranged opposite each other on the stem. · if you want to get rid of a black walnut tree, there are two main methods: Natural methods include cutting down the tree and grinding the stump or covering the stump with black plastic. · the black walnut (juglans nigra) is a valuable native species of eastern north america, prized for its dark, durable lumber and distinctively flavored nuts. · black walnut trees are some of the most widely-grown trees in north america.