One nail or bolt attaching a metal plant hanger to a tree will not usually hurt a tree. Over time the tree will develop a compartment around the damaged area and continue to grow. A young or diseased tree, however, will not handle a nail or bolt very well. Only hang a metal plant hanger on mature, healthy trees.
About this Author
Karen Carter has spent the last three years working as a technology specialist in the public school system. This position included hardware/software installation, customer support, and writing training manuals. She also spent four years as a newspaper editor/reporter at the Willapa Harbor Herald.