In December I had an opportunity to rake up a bunch of leaves from a friends place. I was thrilled because our trees are still young so very little leaf fall . The leaves were from her big Black Walnut. I mulched a bed with roses, brugs, daturas and lillies. The roses look fine, but I am worried about the others, especially the brugs. Am I going to lose them? I had no idea black walnut was toxic to some plants. Maybe I should rake what I can out of the bed?
Found my answer !http://davesgarden.com/guides/articles/view/1186/