The call for greener cities has grown in recent years. There are many possible solutions, but the space for implementation is limited. It is therefore not surprising that more and more often you come across lushly greened house walls - which can be used to green any city to save space. While ivy and other climbing plants have always adorned older residential objects, nowadays a mix of different plants on house facades of all ages catches the eye. These vertical or urban gardens are just capturing our cities.