Example of a balcony vertical garden

Quick answer：

A balcony vertical garden, also known as a vertical green wall, is a feature that utilizes a vertical surface on a balcony or terrace to grow plants. It typically involves a series of planters or shelves that hang or are mounted on the wall, allowing for a lush, green space in urban settings. These gardens can enhance air quality, provide insulation, and add aesthetic value to the space. They are designed to be low maintenance and can accommodate various types of plants, from herbs and flowers to small trees and shrubs.