Are cannabis use problems comparable across individuals using for recreational and medical purposes? An international cross-sectional study of individuals who use self-grown cannabis.

Background: Little is known about cannabis use problems among individuals who use cannabis for medical purposes and whether rates and determinants of cannabis use problems in medical users differ to those observed among individuals using for recreational reasons. This study examines whether Severity of Dependence Scale (SDS) scores differ across individuals who use self-grown cannabis for the following reasons: "recreational only", "medical and recreational" and "medical only". Furthermore, the study tests whether cannabis use frequency, cannabis strain, and type of cannabis influences the strength of the association between purpose of use and cannabis use problems.

Growing practices and the use of potentially harmful chemical additives among a sample of small-scale cannabis growers in three countries.

Background: With the growth of legal cannabis markets there has been recognition of the adverse impacts of certain cannabis growing practices, notably, use of harmful chemicals. A major concern has been the use of Plant Growth Regulators (PGRs) which limit plant size and stimulate bud production. These chemicals, many of which have been banned from food crops, have been found unlisted in cannabis growing nutrients sold online or in hydroponic stores.

The three betrayals of the medical cannabis growing activist: From multiple victimhood to reconstruction, redemption and activism.

While cannabis has been widely used in the UK for over 50 years, it is only in recent decades that domestic cultivation has become established. Public concern, media reporting and policing policy has emphasised the role of profit motivated criminal organisations often working on a large scale and with coerced labour. However, increasingly, another population are growing for medical reasons, to help themselves and others treat or manage difficult, poorly understood, or incurable conditions.

Global patterns of domestic cannabis cultivation: sample characteristics and patterns of growing across eleven countries.

Background: This article aims to provide an overview of: demographic characteristics; experiences with growing cannabis; methods and scale of growing operations; reasons for growing; personal use of cannabis and other drugs; participation in cannabis and other drug markets; contacts with the criminal justice system for respondents to an online survey about cannabis cultivation drawn from eleven countries (N=6530). Important similarities and differences between the national samples recruited will be discussed.

Methods: This paper utilizes data from the online web survey of predominantly 'small-scale' cannabis cultivators in eleven countries conducted by the Global Cannabis Cultivation Research Consortium (GCCRC).

Lessons from conducting trans-national Internet-mediated participatory research with hidden populations of cannabis cultivators.

Background: Internet-mediated research methods are increasingly used to access hidden populations. The International Cannabis Cultivation Questionnaire (ICCQ) is an online survey designed to facilitate international comparisons into the relatively under-researched but increasingly significant phenomenon of domestic cannabis cultivation. The Global Cannabis Cultivation Research Consortium has used the ICCQ to survey over 6000 cannabis cultivators across 11 countries.

Attitudes of cannabis growers to regulation of cannabis cultivation under a non-prohibition cannabis model.

Background: How cannabis cultivation is dealt with under various examples of cannabis legalization or regulation is an important consideration in design of such schemes. This study aimed to (i) investigate support among current or recent cannabis growers, for various potential policy options for cannabis cultivation if prohibition were repealed, and (ii) explore the support for these options across countries, scale of growing operations, demographics, drug use and cannabis supply involvement variables.

Methods: This study utilized data from the online web survey of largely 'small-scale' cannabis cultivators, aged 18yrs and over, in eleven countries conducted by the Global Cannabis Cultivation Research Consortium (GCCRC).