Some gardens should be preserved because they are works of art made by great designers like Beatrix Farrand , the landscape architect who created Dumbarton Oaks and its adjacent park in Washington , or Russel Wright , the industrial designer who shaped a native forest like a sculptor at Manitoga , his home on the Hudson River in Garrison , N.Y . But others are made by ordinary people doing extraordinary things -- like planting a field of flowers that becomes the heart of a community .