The Effect of Light Spectrum on the Morphology and Cannabinoid Content of Cannabis sativa L. Gianmaria Magagnini, Gianpaolo Grassi, Stiina Kotiranta Medical Cannabis and Cannabinoids, 2018, 1, 19–27 DOI : 10.1159/000489030   Abstract Cannabis sativa L. flowers are the main source of Δ-9- tetrahydrocannabinol (THC) used in medicine. One of the most important growth factors in cannabis cultivation is light; light quality, light intensity, and photoperiod play a big role in a successful growth protocol. The aim of the present study was to examine the effect of 3 different light sources on morphology and cannabinoid production. Cannabis clones were grown under 3 different light spectra, namely [...]