Top 10 gardening facts from Mrs. Obama

Michelle Obama continues her entertainment show media blitz. The first lady delivered "Top Ten Fun Facts About Gardening" last night on David Letterman. Some of those fun facts include how to grow a guacamole tree (plant tomatoes, avocados, onions, and cilantro together, of course!) and with effort and care, you too can grow your own "Barack-oli." Her performance follows the release of her first book, American Grown: The Story of the White House Kitchen Garden and Gardens Across America, in which lets readers take a look at the White House garden she created with local school kids.— By Jessica Ferrer