This video shows a step by step process on how to build your own sustainable, efficient bottle tower garden out of household materials for less than what you would pay for a good salad at a restaurant. You can install these almost anywhere that the sunlight touches, from hanging them on a wall, to making long rows of towers to provide a sustainable food source. You can hang these from your window, down a wall, or even grow food in your home with these by hanging them near a light.