HomeGrown looks up and out this week with stories of a Louisville landscaper creating a green wall in downtown Louisville – and a man who wrote of his father’s obsession with bird watching. Designer Tracey Williams discusses the almost 500-square-foot vertical wall of 800 perennial plants she created at the “Green Building” on East Market Street in Louisville.California author Dan Koeppel talks about life with – and without – his father as he traveled the world personally identifying over 7,000 species of birds. Downloadable MP3Find out more: