A Windowfarm is a vertical, hydroponic growing system which uses recyclable materials that allows for year-round growing in almost any window. It lets plants use natural window light, the climate control of your living space, and organic "liquid soil.
This Garden Spiral is a great way to create a vegetable garden when you only have a small space to work with. Plus it looks pretty in the yard - use river rock fill in with garden soil to support the stone and fill in between the crevices
40+ Creative DIY Garden Containers and Planters from Recycled Materials
Plastic Bottle Vertical Garden: And on the super green end of the spectrum, you can use turn plastic bottles into an awesome sustainable vertical garden. (via Rosenbaum) How have you repurposed plastic bottles?
Found via Urban Garden, these hanging gardens are an art installation type project by Fedor. Using string, moss, grass, and bowls or a glass reservoir - plants are transformed into suspended living works of art.