HomeGrown pushes the chronological ecological clock as far as it can be pushed this week with stories on the 2010 Perennial Plant of the Year and a look way back at Kentucky’s Big Bone Lick State Park, once home to mastodons and other ancient creatures. Dr. Steven Still of the Perennial Plant Association has the 2010 winner – the baptisia – and Stan Hedeen, author of a book on Big Bone Lick, fills us all in on what was once considered North America’s greatest paleontological treasure, capturing the attention of George Washington, Ben Franklin and Thomas Jefferson. Downloadable MP3Find out more: