David Holmes has a Master’s Degree in Mathematics and was an award-winning adjunct mathematics professor. He was awarded a fellowship to conduct research at the Jet Propulsion Laboratory in Pasadena, Calif. Holmes was inspired to cultivate marijuana in 1999 after a visit to a high-tech indoor garden. He launched his first large-scale commercial facility in 2007. Shortly thereafter, Clade9 was formed to meet demand for cultivation experts. Applying his expertise in grow room design and management, as well as world-class nutrients, Holmes focused on medical marijuana strain breeding. He has developed over a dozen strains including the Ying Yang, a high-CDB strain with superior seizure-reducing capacities.