So one of the very best things you could do to eliminate some of the problems facing plants growing under Black Walnut trees would be to add lots of organic matter to your soil. Toxins adhere to organic matter rather than being absorbed by plants, and organic matter also encourages a healthy soil microbial population.
Plants sensitive to the walnut trees toxic effect may be at a higher risk when planted in heavy urban soils that lack organic matter. Wet, poorly aerated soil, very common in many urban areas, discourages microbial growth. Isnt that weird that plants can do that to each other? Walnuts are not alone in this skill set, they are just better at it than anybody else in the plant kingdom.Īccording to the Virginia Cooperative Extension: But their messiness is far outweighed by their ability to inhibit or kill other plants around them.
The curse is two-fold: like any nut or fruit tree, they can be messy. The asset is a protein source that both you and your squirrels (and other animals) can enjoy. People who are gifted with a black walnut tree have both an asset and a curse. Juglone is exuded from all parts of the tree, including the leaves, wood, fruits, and roots. These plants may wilt, turn yellow, and eventually die. The Problem With Black Walnut Treesīlack Walnut trees ( Juglans nigra) are in high demand for their beautiful wood and provide a plethora of nuts for squirrels, birds, and other wildlife (and also are edible for humans, too)īlack Walnut trees produce a chemical called juglone that inhibits many other plants from growing under them. We do not want to cut down our walnut trees, but would like to have something growing under them. What would be good plants or grass that would survive around these trees. We have an area that has a lot of walnut trees and can not get anything to grow around them or under them. I received this question from one of my readers, and its a topic that will provide information to a large number of you, here are my thoughts: Included here are suggestions for native plants that will thrive under your Black Walnut Trees Black Walnut trees ( Juglans nigra), while prized for their wood, cause many plants growing under them to wither and die.
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