In the past we didn’t designed gardens that play a critical ecological role in the landscape, but we must do so in the future if we hope to avoid a mass extinction from which humans are not likely to recover either. As quickly as possible we need to replace unnecessary lawn with densely planted woodlots that can serve as habitat for our local biodiversity. Homeowners can do this by planting the borders of their properties with native trees plants such as white oaks ( Quercus alba ), black willows ( Salix nigra ), red maples ( Acer rubrum ), green ashes ( Fraxinus pennsylvanica), black walnuts ( Juglans nigra ), river birches ( Betula nigra ) and shagbark hickories ( Carya ovata ), under-planted with woodies like serviceberry ( Amelanchier canadensis ), arrowwood ( Viburnum dentatum ), hazelnut ( Corylus americnus ), blueberries ( Vaccinium spp) . Our studies have shown that even modest increases in the native plant cover on suburban properties significantly increases the number and species of breeding birds, including birds of conservation concern. As gardeners and stewards of our land, we have never been so empowered to help save biodiversity from extinction, and the need to do so has never been so great. All we need to do is plant native plants!