Frequently asked questions What are the medical marijuana laws in Michigan? Here is an overview of the medical marijuana laws in Michigan: November 2008 – Voters approve of Proposal 1, the “Michigan Medical Marihuana Act”, removing state penalties for the use, possession and cultivation of cannabis by patients in possession of a valid medical marijuana certificate from their physician. 2012 – House Bill 4586 (HB 4586) is introduced, amending Michigan’s medical marijuana laws. HB 4586 makes it illegal to transport or possess usable marijuana by car unless it is locked away and in an enclosed case in the trunk of the vehicle, and no marijuana is being used whilst driving. 2013 – House Bill 4834 (HB 4834) amends the medical marijuana laws again. This time, proof of Michigan residency is needed, as well as a bona-fide relationship with a doctor. This means the doctor must maintain medical records, as well as provide follow-up care. The types of ID accepted are a a Michigan-produced driver’s license, official state ID or valid voter registration. Medical marijuana cards can be valid for up to 2 years in Michigan. 2013 – Michigan Supreme Court rules that dispensaries are illegal. This ruling means that medical marijuana patients must grow their own cannabis (up to 12 plants, out of public view), or appoint a caregiver, who must be aged 21 or over and can be a caregiver for a maximum of 5 patients. Caregiver must not have been convicted of any violent felony (ever), or a lesser felony for at least 5 years. 2016 – Dispensaries become legal, but are not operational as of yet. 2018 – Recreational cannabis is legalized. Medical marijuana dispensaries become operational. 2019 – Recreational sales begin. 2020 – 1,411 cities and townships in Michigan have banned adult-use sales, including Detroit. Many have stated their intent to roll out adult-use later in 2020.