The sedum plantings come from nearby Emory Knoll Farms, the only nursery in North America to focus solely on propagating plants intended for green-roof systems.
More than a visual statement of green-ness, these roofs provide extra insulation and—more importantly in cities—water retention that can attenuate flooding.
One family’s effort to “smuggle a modern house into a historic district” in Washington, DC, results in a brightly transformed space made for family life.