This is my Vertical towers that I am building with a 3d printer. I learned this by following Larry @ 3dgtower.com that has copied all the other towers out there with Improvements and making systems better and affordable. Vertical gardening helps to  get the most from our space to grow large volumes of plants in a smaller area. these will grow 24 plants in less than 2 sq. ft.  As the weather gets better I will move these outside.