Blue painted cans act as a wall container, Toronto, Canada

Blue painted cans act as a wall container, Toronto, Canada, originally uploaded by Happy Sleepy.

This is an excellent flickr photoset with innovative ways to make a container garden.

Container Gardening in Toronto

Kgirl had the idea to make a container garden out of discontinued blue recycle bins.
They seem almost made for it, with the holes on the bottom like that.