Green facades are becoming more and more frequently used tools in the process of urban transformation. They are treated by architects and town planners as a new material which allows them to transform grey and unattractive urban environment. Their final look, however, requires careful decisions and selecting adequate floral arrangements. Graphics, paintings and drawings backed by the knowledge of botany may result in creating green walls which can be veritable floral masterpieces. Virtual 3D models, on the other hand, enable us to understand better the mutual interaction between the ‘green facades’ and the surrounding urban environment. When designing vertical gardens and green murals, it is worth remembering about all the possibilities offered by sketches and the computer in order to transform urban areas thoughtfully and consciously.