When applying for a license, one must first familiarize himself with the relevant federal and provincial, territorial, municipal, and indigenous government legislation. Applicable laws and guidelines include the Cannabis Act and its regulations, Food and Drugs etf marijuana canada Act, Canada Consumer Product Safety Act, environmental laws, zoning ordinances, Cannabis Tracking and Licensing System, Health Canada guidelines, and many more. In Ottawa, cannabisused for medical purposes will have the same restrictions as tobacco. It is prohibited to smoke medical cannabis in the following places: Adults 19 and older can purchase up to 30 grams of dried cannabis (or its equivalent) per transaction and can possess no more than this amount in public. 30 grams of dried cannabis is equivalent to: 150 grams of fresh cannabis; 2100 grams of liquid (e.g. oil) product; or 30 cannabis plant seeds. If you possess more than 30 grams of dried cannabis (or its equivalent) in public, law enforcement officers could ticket you or you could face criminal charges. There is no limit to how much cannabis you can keep at home.