Mondrian would have appreciated square trees. Furthermore, they would enable wood industry to lose less material, to cut easier with machines and to store more efficiently. Hence square trees would be more sustainable than round trees.
Created by Draw me a sheep. See also: Modernistic Watermelon, Cubic Fruit, Modernistic Vaginas, Human DNA trees, Phone Trees, Cellphone Treemasts, Harddisk Tree, Windmill trees.