Frequently asked questions Overview of Arizona Medical Marijuana Laws 2010 – Ballot Proposition 203 “The Arizona Medical Marijuana Act” is approved. This means that a patient with a written or oral recommendation by a physician could use, cultivate and possess cannabis. 2012 – the Arizona Department of Health Services (ADHS) released the revised rules for regulating medical marijuana. Arizona’s first medical marijuana dispensary, ‘Arizona Organic’ also opens up. 2013 – Governor Jan Brewer signs Senate Bill 1443. Medical marijuana patients may possess up to 2.5 ounces of usable marijuana. Home cultivation is only allowed if patient lives more than 25 miles away from the nearest dispensary. A maximum of 12 plants may be grown, if they are cultivated in an enclosed, locked facility. Dispensaries operate on a “not-for-profit” basis. Profiting from cannabis sales may be used as evidence of a federal crime! Arizona has a Caregiver program.