Plant walls, also known as green walls, vertical gardens, green facades or living walls are structures that allow for vertical plant growth on structures like walls or trellises. These can be found in various spaces, including commercial buildings, residences and public areas. Vertical gardens can be found in both interior and exterior environments. Based on the project's design requirements, different systems can be used to set up a plant wall. Besides the aesthetic appeal they provide, green walls also come with many benefits, particularly for those that inhabit the surrounding space.[...]

PNC Financial Services Group, based in Pittsburgh PA, has built a plant-covered exterior wall, "to make its headquarters building more energy-efficient." Looking like one of those huge billboards seen along an