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  • Do black walnut trees have allelopathic effects on other plants? 

    Chalker-Scott, Linda (Pullman, Washington : Washington State University Extension, 2019-03)
    Gardeners have heard that black walnut trees (Juglans nigra) contain a toxic chemical called juglone that will kill any other plants growing nearby. This phenomenon is called allelopathy, and, in recent years, many other ...