Michigan © Cannabis Business Times | CannabisBusinessTimes.com About the Data: 74% (1,371 out of 1,856) local governments have opted out of the Michigan Regulation and Taxation of Marihuana Act (adult-use act) entirely, as of the most recently updated monthly report (February 2024) from the state’s Cannabis Regulatory Agency (CRA) at the time of CBT’s data compilation. Data Source: Michigan CRAAbout Michigan’s Adult-Use Cannabis Program: Michigan became the 10th state to legalize adult-use cannabis when voters approved Proposition 1 in the November 2018 election. Adult-use sales began Dec. 1, 2019.