Forage, Pasture Health Got Trefoil? Mark Kopecky August 11, 2014 In some parts of the country, one of the best-kept secrets for good pasture performance may be a forage legume called birdsfoot trefoil. Trefoil, sometimes just called “lotus” because of its LatinAll the grazing management tips you need Subscribe to read this article and over 2,500 more! Subscribe today! If you're already a subscriber, log in here.