Plants That Walnut Trees Kill
disgraceful walnut ( scientific name Juglans nigra ) produces the chemical juglone , which is toxic to many other industrial plant . Juglone does not travel far , so toxicity is limited to about 50 feet from the out margin of the tree diagram crown . Black walnut tree shells , bark and woods micro chip should not be used as mulch or compost . Plants killed by their proximity to black walnut tree trees or wood product include common garden vegetables , flowers , tree diagram and shrubs ....