Global patterns of cannabis cultivation have followed a fascinating development, from highly concentrated production in certain developing countries to decentralized production in almost every country around the world (UNODC, 2014). Historically, the spread of cannabis cultivation across the globe reflected the industrial utility of hemp; the widespread use of cannabis as a recreational drug did not appear until much later (Abel, 1980, Booth, 2003). It is with the emergence of modern patterns of cannabis use in the developed world that we have seen major changes in patterns of cannabis production. As demand for cannabis increased globally, fuelled by the developments of the “counter-culture” of the 1960s and 1970s, so cultivation in the developing world began to take on new dimensions. Firstly, cultivation increased in many traditional growing regions as exportation to the consumer markets of the industrialized world became an attractive option. Secondly, in response to global demand, countries such as...