A number of oil producing crops (e.g., soybean, sunflower, safflower, flaxseed, canola, and cotton) are grown in the U.S. and their non-grain residues (i.e., stalks, leaves, hulls) could potentially be used for bioenergy and bioproducts. Few studies have analyzed the potential quantities that might be available as it is generally assumed that the quantities produced are small and the residue deteriorates rapidly in the field. After accounting for the quantities needed to be left on the field to maintain soil quality and reduce erosion, the amounts that can be collected are generally too small to be economically viable.