Here's a great example of a low-water use garden full of hens-and-chicks, sedums and cacti. I think this kind of garden is called a xeriscape garden.
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Built Green is an environmental building program of the Master Builders Association of King and Snohomish Counties, developed in partnership with King County, Snohomish County, and other government agencies in the Seattle area. Built Green is designed to help homebuyers find quality, affordable homes that offer opportunities to protect the health of their families in the Seattle area.
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