Picture of a soilless plant wall

Quick answer：

Soilless plant walls, also known as vertical gardens or living walls, are constructed using hydroponic or aeroponic systems to grow plants without soil. These walls are typically mounted on buildings or other structures and can be used for decorative, environmental, or functional purposes. They are designed to be aesthetically pleasing, improve air quality, and provide insulation. Images of such walls often showcase a variety of plants arranged vertically, with a visually appealing and sustainable design.