You’ve probably seen a green wall growing up the side of a building, decorating a courtyard, or perhaps in a hotel lobby. Otherwise known as vertical gardens or living walls, green walls, which incorporate plants, flowers, and greenery indoors and out, are growing like—yes—weeds. Typically built using a skeletal structure to hold the plants and pipes that allow for self-watering, their popularity isn’t just aesthetic; green walls are beneficial for a variety of reasons.
Used on the exterior of buildings, they mitigate humidity and act as an additional layer of insulation, helping to cool the interior of the building in warm weather and reduce energy costs for heating in winter. Used indoors, green walls help improve air quality by naturally removing carbon dioxide and producing oxygen-rich air, as well as filtering the air around them, reducing levels of volatile organic compounds (VOCs). Green walls can also help reduce noise pollution. In addition, because being close in proximity to plants can enhance well-being, green walls may help reduce stress, improve concentration, and improve mood.