The 'Design of a Japanese zelkova tree square' refers to architectural and landscape plans for a public space featuring Japanese zelkova trees (Zelkova serrata). These trees are known for their ornamental value and cultural significance in Japanese gardens. The design would typically include considerations for the trees' growth patterns, spacing, and integration with seating areas, pathways, and other elements of the square. This can enhance the aesthetic appeal and provide a serene environment for public use.