This July 11, 2017 photo shows Purple Coneflowers appear in a front yard garden in Dallas, Texas on July 11, 2017. Instead of cutting every perennial to ground level before the first frost, gardeners are now being selective. Allowing the dried seed heads of plants like purple coneflower (Echinacea), and others to stand all winter will provide food for nonmigratory birds. (AP Photo/Benny Snyder, File)