double-layer small three-dimensional planter diagram

Quick answer：

A double-layer small three-dimensional planter is a garden feature that consists of two stacked levels, typically designed for small spaces. These planters are often used for ornamental plants and can be placed on balconies, patios, or indoor spaces. The diagram would show the dimensions, structure, and layout of the planter, including the materials used and the types of plants that would be suitable for each level.