Tray-planted Bonsai is a type of gardening technique that involves growing miniature trees in shallow trays. This method of gardening is often used to create aesthetically pleasing, small-scale trees and shrubs. The term Bonsai is derived from the Japanese words 'bon' meaning tray and 'sai' meaning planted. Tray-planted Bonsai is a popular form of gardening that has been practiced for centuries in Japan and other parts of Asia.