The primary goal of this credit is to provide habitat and promote biodiversity. To satisfy the intent of the credit, the vegetated roof must be an intensive roof system, where the depth of the growing medium is 6 inches or more. Where the vegetated roof is a combination of intensive and extensive roof systems, only the intensive portions of the roof can count towards SSc5.1 Site Development-Protect or Restore Habitat. Applicable Internationally.Intensive roofs are vegetated roofs that support a wider variety of plants (including shrubs and trees) than extensive roofs, and have greater soil volume. The depth of the growing medium is an important factor in determining habitat value. The native or adapted plants selected for the roof should support the endemic wildlife populations of the site. More information on vegetated roofs can be found at Green Roofs for Healthy Cities (http://greenroofs.org/).Sedums used on vegetated roofs should provide a level of species diversity similar to the native habitat of the project\'s region. Generally, green roofs with less than six varieties of sedum are considered a monoculture and cannot be used to earn this credit (though they may contribute to the achievement other credits). Project teams considering the use of sedum should note that the selected species should enhance the biodiversity of the region and blend with the local habitat.