Webprovinces and territories are responsible for determining how cannabis is distributed and sold within their jurisdictions. How cannabis can be sold. Weblearn about the current status of canabis (marijuana) laws in canada, and the work being done to legalize and regulate it. The safe and responsible retailing of cannabis act is the provincial law regarding the distribution and use of cannabis in manitoba. Rules under the act include:. Webyou must be 19 and older to buy, use, possess and grow recreational cannabis. This is the same as the minimum age for the sale of tobacco and alcohol in ontario.