Close to the base of the target tree, point hammer down in a copper nail at a slight angle. There is no standard, as far as size when choosing copper nails, but usually the more surface area of the nail in terms of length and width, the more effective the treatment. Even a longer nail means deeper penetration, resulting in a higher chance of the tree getting sick. Further hammer nails in a ring around the tree, about half an inch apart. This will damage an increased number of growth cells and increase the concentration of copper in the tree. This higher concentration is better because this increases the chance of metal oxidation that poisons the tree. The idea that a copper nail will kill a tree only applies to very small trees such as seedlings. Larger trees can tolerate a single nail without any problem and will simply grow over the nail in time without any negative effects. If necessary, cover nail heads with mud? Der Zweck der Abdeckung Kupfer-Nägel mit Schlamm ist es, die Nägel zu verbergen. Copper has a tendency to show quite clearly in the trunk of trees through its bright colour. Covering the nails makes the process less obvious with a casual look and can preserve the look of a yard as the tree begins to die. With mud to cover them, however, will not completely hide that something has been done to the tree. After the tree is dead, remove the nails before removing the tree. Otherwise, the nails could fly and hurt someone, or they could damage the machines used to remove the tree as there are many nails.