Cannabis in Maryland  is only legal for medical purposes.

Maryland legalized the medical use of cannabis in 2014.

Medical patients may possess up to a 30 day supply of medical cannabis. Unless specifically authorized by a doctor, a 30 day supply is 120 grams of usable cannabis or 36 grams of an infused product. Possession by a non-patient of up to 10 grams is a decriminalized civil offense.