I recently visited Cira Green, a park in Philadelphia that's located on top of a parking garage, about 100' off the ground. The park features numerous garden beds and native trees. There are a number of challenges that come with planting trees on elevated surfaces including soil volume and mixture, wind, and a dynamic load. However, when done correctly, these green roofs can offer numerous benefits including wildlife food and habitat, storm water control, and providing the public with a nice public place to visit.
More info:
https://ciragreen.com/
https://developingresilience.uli.org/case/cira-green/
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It’s a pretty unique environment for North America as well. The building takes up an entire city block so it can hold the weight of what is basically a boreal forest on top. The building is almost 60 years old so the trees are quite sizable. And there are a lot of them! I can see 9 from my window and that is not close to all of them.
It’s a pretty unique environment for North America as well. The building takes up an entire city block so it can hold the weight of what is basically a boreal forest on top. The building is almost 60 years old so the trees are quite sizable. And there are a lot of them! I can see 9 from my window and that is not close to all of them.