Researchers from Germany’s Technical University of Dortmund are not the only ones interested in using yeast to make marijuana compounds. Scientists from England’s Anandia Laboratories and Canada’s Hyasynth Bio are also hard at work developing their own strains of THC-producing yeast. However, these teams already have some stiff competition from an unexpected source — the marijuana plant itself. Some strains of the marijuana plant are bursting with THC, with up to 30 percent THC per dry weight. Called the “the Ferrari of the plant world” by Anandia Laboratories founder Dr. Jonathan Page, it appears the marijuana plant is hard to beat.