The earliest appreciation of three-dimensional flower beds

Quick answer：

The earliest appreciation of three-dimensional flower beds can be traced back to ancient civilizations. In ancient Egypt and Greece, terraced gardens and intricate horticultural designs were prevalent, which can be considered early forms of three-dimensional flower beds. These gardens often featured stepped terraces, lush plantings, and artistic arrangements that created a sense of depth and height. The Roman Empire also contributed to the development of such gardens, further refining the art of landscaping. The term 'three-dimensional flower beds' became more prominent during the Renaissance period when gardening became a sophisticated art form, incorporating innovative designs and techniques.