Toronto City economic development officer Chris Rickett shows off new 'Green Roof' at City Hall. Green roofs are required for many new structures in the city. They are plant beds that absorb rain water and reduce the amount of runoff going into sewers, reduce heat, and have flowers that help feed insects like butterflies, like the ones seen below at a butterfly garden nearby at Harbourfront:
Monarch Butterfly feeds on Blazing Star plants
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