Green Roofs for Healthy Cities (GRHC) presented their Green Roof and Wall Awards of Excellence at a ceremony in Chicago on Friday. Among the winners was this quilt-like green roof at the Chicago Botanic Garden by Oehme, van Sweden & Associates. The roof, which is being used for research purposes, has 300 different plant taxa in varying depths of soil. GRHC has images of all the award winners on their website, along with details on the design of each roof.
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