Vertical gardening and living signs really get me excited. There is so much potential for this way of thinking. I would simply love to do more of these. Already done quite a few but the idea of persuading everyone to have a vertical garden in Johannesburg outside their home on the pavement would move this city into the next level of enlightenment as far as I am concerned. The concept is perfect for anyone with limited space and in a city like Johannesburg everyone's space is limited.Vertical gardens are definitely a part of the answer to many environmental problems. Imagine a world full of growing things. Beautiful and edible plants, reaching up toward the sky wherever you look.