Roof gardens, the urban gift that keeps on living

In the era of climate change, every surface that offers a habitat to plants and animals counts. That includes house roofs, garden sheds, garages, carports and dustbin boxes – even the tops of bird houses can be greened to nurture biodiversity. Cultivated roofs create so-called stepping stone biotopes – places that serve as reproduction or retreat sites for different and often endangered species. Whole parts of towns and cities are effectively sealed, since many animals, especially insects, cannot travel a long way from one large green area to the next. Green roofs then function like stepping s…

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