THE PLANTS WATER THEMSELVES!...kinda/Election signs, not just for sledding anymore.

Last summer the rooftop hit 42 degrees C, and the sub-irrigated bins were the reason most (most!) of the plants made it through those extreme conditions.

The Rooftop Garden Project in Montreal is responsible for designing and providing our bins.
You can make your own from a recycling bin, a 1" PVC pipe, and an election sign for the false bottom/reservoir.

Go to http://rooftopgardens.ca/en/kits to find out more about the Rooftop Garden Project, how to build your own bins, and other examples of urban agriculture in Montreal.