Method for surgically operating on trees

A tree surgery method, comprising:

• removing a decayed-tissue by a step of removing the decayed tissue of a cavity and exposing a solid woody tissue;
• performing an internal treating step of sterilization and insecticidal treatment on the woody tissue and drying the woody tissue;
• forming a protective layer in a step of coating the woody tissue with a protective agent;
• exposing a cambium in a step of cutting out an edge of the cavity and-applying a thiophene paste to a portion where the cambium is exposed;
• filling the cavity on which the protective layer is formed in a step of filing the cavity with a urethane foam;
• and
• forming an artificial-tree-bark in a step of filling and coating an upper surface of the urethane foam with a tree bark material including a mixture of cork powder and silicone sealant to form an artificial tree bark, wherein
• the tree bark material includes a mixture of a plurality of silicone sealants having different colors from each other to allow the tree bark material has a color similar to a color of a tree;
• the tree surgery method further comprising:
• performing a pelite spreading step of spreading pelite on a bottom surface of the cavity to improve drainage performance before spreading the tree bark material;
• and
• performing a waterproofing step by waterproof treatment before the cavity filling step by spreading the tree bark material of a predetermined height on the bottom surface of the cavity, wherein the pelite and the tree bark material are covered only on the bottom of the inner surface of the cavity.