Cannabis: Evolution and Ethnobotany is a comprehensive, interdisciplinary exploration of the natural origins and early evolution of this famous plant, highlighting its historic role in the development of human societies. Cannabis has long been prized for the strong and durable fiber in its stalks, its edible and oil-rich seeds, and the psychoactive and medicinal compounds produced by its female flowers. The culturally valuable and often irreplaceable goods derived from cannabis deeply influenced the commercial, medical, ritual, and religious practices of cultures throughout the ages, and human desire for these commodities directed the evolution of the plant toward its contemporary varieties. As interest in cannabis grows and public debate over its many uses rises, this book will help us understand why humanity continues to rely on this plant and adapts it to suit our needs.

For thousands of years, Cannabis sativa, commonly called cannabis or marijuana, has been used for many different purposes. Due to its enormous medicinal values, increasing numbers of countries and regions have started to legalise the cultivation of this plant. When grown commercially, cannabis is most often produced in controlled environments including greenhouse and indoor growing rooms, to ensure consistent growth and high quality. Even for field production, propagation is frequently conducted in controlled environments. Commercial operations and individual growers who cultivate cannabis for personal consumption, require scientific information on how to cultivate cannabis most effectively and efficiently. To meet these needs, scientists have been conducting research on how to optimize cannabis cultivation both in small and large scales. Handbook of Cannabis Production in Controlled Environments is the result of collaborations between some leading cannabis scientists and highly experienced practitioners. Featuring full-color illustrations and photographs throughout, this book covers a broad range of topics include cannabis biology; science and techniques for breeding and propagation; management and optimization of both aerial and rootzone environments; plant nutrition and nutrient disorder diagnosis; crop training and pest management; harvesting and post-harvest processing. Along with the basic aspects of controlled environment cannabis production, this book summarises developments in these areas that may challenge old beliefs and improve production. Led by Editor, Youbin Zheng, President of the Canadian Society for Horticultural Science/La Société Canadienne de Science Horticole, this book is a practical guide for cultivators, consultants, and researchers; a reference for students; and an information source for individuals who grow cannabis for personal consumption.

Over the course of a year, in just one national forest in California, raids on illegal marijuana growing operations yielded 19,710 pounds of infrastructure, 138 ounces of restricted poisons, 4,595 pounds of fertilizer, 12 gallons of common pesticides, 5.6 miles of waterlines, and 102 propane bottles. Even as efforts to legalize marijuana accelerate, such “trespass grows” spread exponentially—as does their effect on the environment. The nature of this impact on the land and in the political arena is the pressing issue addressed in Where There’s Smoke. This first-of-its-kind interdisciplinary anthology draws on the insights of scientists, researchers, and activists and ranges across the humanities, natural sciences, and social sciences to explore the troubling environmental consequences of illegal marijuana production on public, private, and tribal lands. Classified as a Schedule 1 drug, marijuana has been a central focus of the so-called War on Drugs—with the perverse result of shifting marijuana production from Mexico to the United States and with unanticipated consequences for the natural environment. Where There’s Smoke assesses the broad spectrum of the policy’s effect on land and water, flora and fauna, as well as the firsthand challenges faced by those tasked with responding to this tangled and often dangerous state of affairs. In its broad scope, varied perspective, and depth of detail, the book will prove essential to an understanding of the complex social and environmental ramifications of marijuana policy and politics in the United States.

Cannabis sativa is best known as the source of marijuana, the world’s most widely consumed illicit recreational drug. However, the plant is also extremely useful as a source of stem fiber, edible seed oil, and medicinal compounds, all of which are undergoing extremely promising research, technological applications, and business investment. Indeed, despite its capacity for harm as a recreational drug, cannabis has phenomenal potential for providing new products to benefit society and for generating extensive employment and huge profits. Misguided policies, until recently, have prevented legitimate research on the beneficial properties of cannabis, but there is now an explosion of societal, scientific, and political support to reappraise and remove some of the barriers to usage. Unfortunately, there is also a corresponding dearth of objective analysis. Towards redressing the limitation of information, Cannabis: A Complete Guide is a comprehensive reference summarizing botanical, business, chemical, ecological, genetic, historical, horticultural, legal, and medical considerations that are critical for the wise advancement and management of cannabis in its various forms. This book documents both the risks and benefits of what is indisputably one of the world’s most important species. The conflicting claims for medicinal virtues and toxicological vices are examined, based mainly on the most recent authoritative scientific reviews. The attempt is made consistently to reflect majority scientific opinion, although many aspects of cannabis are controversial. Aside from the relevance to specialists, the general public should find the presentation attractive because of the huge interest today in marijuana. Unfortunately, society has become so specialized and compartmentalized that most people have limited appreciation of the importance of science to their lives, except when a topic like marijuana becomes sensationalized. This review of cannabis can serve as a vehicle for public education in the realm of science and technology. Indeed, towards the goal of disseminating the important information in this book to a wide audience, the presentation is user-friendly, concise, and well-illustrated in the hope that non-specialists will find the topics both informative and entertaining.