About 4,500 acres of former agricultural fields in Grand Teton National Park, Wyoming, are still dominated by non-native grasses, especially smooth brome. Homesteaders planted the grass in the late 1800s for the production of hay for livestock during winter, and more than a century later, the National Park Service is working to restore the fields and bring back native sagebrush-steppe habitat that is used by elk, bison, pronghorn and greater sage-grouse. The restoration programme has been underway since 2007, and the work involves removing established non-native vegetation and reintroducing native grasses, shrubs and wildflowers.
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