Living Green Roof used as laboratory at Princeton

Princeton University

At the moment, the roof above Dormitory A of the redeveloped Butler College complex is a “green” roof only in the most technical sense of the phrase.

The 14 varieties of hardy sedum planted on the Butler rooftop earlier this year have now exploded into a kaleidoscope of color. The contrasts in the palette of the many-hued rooftop garden are only expected to intensify as summer turns to fall.

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