Columnar plant wall illustration

Quick answer：

A columnar plant wall is a vertical garden feature designed to showcase columnar plants, which have a slender, upright growth habit. These walls are commonly used in urban spaces, offices, and homes for aesthetic and environmental benefits. They provide greenery, improve air quality, and can serve as a decorative element. The illustration would depict the arrangement and types of columnar plants, as well as the structural components of the wall.