You should at least be 18 years old or older in order to apply for a medical marijuana card. In case you are a minor, you can ask the appointed caregiver to apply for the card on your behalf.
If you are 21 and over, you may possess up to 2.5 ounces of cannabis in public, up to 10 ounces at home, and cultivate up to 12 plants at home.
Michigan does have reciprocity laws, which means that the state recognizes MMJ recommendations issued by other states.
You can legally purchase medicinal marijuana products from a licensed dispensary.
Growing cannabis plants is legal in Michigan. Both MMJ recommendation holders and adult users are permitted to grow up to 12 plants per person.