Introduction: In recent years, interest in green spaces has increased due to their significant impact on the microclimate. The trends started with green roofs on buildings. Recently, studies have revealed that vertical green facades are not only for aesthetic aspects, but could be more influential and beneficial in balancing temperature in extreme climates, in addition to other benefits such as as the increase in property value. , well-being, health and energy saving. This article will present the definition of green walls and recent interests in this concept in warm climates, it will mainly focus on its passive solution to highlight the environmental benefits and challenges of individual buildings. The study will be linked to some scientific articles in this field through the database, and to a review from the commercial side to find possible considerations to make it more effective.Classifications of green walls:The concept of green facade does not is not a new method, traditional architecture shows many interests in it, especially in hot climates. Nowadays, the theory builds on traditional methods with the potential to involve technology and new materials to make green façade a sustainable passive solution in many buildings. (Kohler 2008) First, green facade systems must be defined, according to Koler, there are mainly two types of this system: 1- In traditional architecture: climbers, trees. 2- In modern architecture: Green facade which is planted on the ground or a pot and climbing the wall through a trellis or other structure, and a living facade which is planted on a special wall located in front of the main wall and features small pots with a water and nutrient supply system. Part of the vertical green system are located in the middle of paper ......ments in architecture to provide buildings with many environmental benefits such as temperature reduction through shading, insulation and evaporation. and It promotes natural ventilation in certain conditions and could block wind if it is thick enough. It has been proven that it can be a very good sound insulator if located in particular places in the building but not like green roofs, in addition it improves air quality and hydrates the environment, which is preferred in hot, dry climates. Ultimately, for a successful concept, many considerations must be taken into account, such as the size and type of this structure, location and orientation are a crucial aspect for plants and choosing the right plants for each climate , and how to design it from the first stages. of the project to study the budget and the combination of its structure with the main building.