The term 'Art of Dwarfing Trees' is a reference to the Japanese art of Bonsai, which involves cultivating and shaping small trees in containers. Bonsai is an ancient practice that has been around for centuries, and it requires patience, skill, and dedication to create beautiful miniature trees. The goal of Bonsai is to create a harmonious balance between the tree and its container, and to create a living work of art.