Most wild plants are perennials while most of our agriculture crops ... <a href="http://www.bio-medicine.org/inc/biomed/biology-news.asp">http://www.bio-medicine.org/inc/biomed/biology-news.asp</a> http://feeds.bio-medicine.org/latest-biology-newsDate:2/15/2013 In our ongoing quest for alternative energy sources, researchers are looking more to plants that grow in the wild for use in biofuels, plants such as switchgrass.