Maine voters legalized recreational marijuana on November 8, 2016, when Question 1 passed by fewer than 4,100 votes. The law allowing adults 21 and older to possess and grow cannabis took effect on January 30, 2017, but licensed retail stores did not open until October 2020 because the legislature and then-Governor Paul LePage spent years fighting over the rules for commercial sales.1Ballotpedia. Maine Marijuana Legalization, Question 1 (2016)
From Medical Use to Retail Sales
Maine was an early mover on medical cannabis. Voters approved the Maine Medical Marijuana Act in 1999, allowing patients with qualifying conditions such as cancer treatment side effects, glaucoma, epilepsy, and multiple sclerosis to use cannabis with written physician documentation.2Maine State Legislature. An Act to Permit the Medical Use of Marijuana A 2009 ballot measure expanded the program to authorize licensed dispensaries, giving patients a supply option beyond growing their own or using a caregiver.
Recreational legalization came seven years later. Question 1’s narrow win in November 2016 made adult possession and home cultivation legal as of January 30, 2017, but it did not open any stores. Governor LePage vetoed a 2017 bill that would have set up the commercial framework, citing federal law conflicts and public safety. In 2018, the legislature overrode his veto of LD 1719, enacting the licensing, taxation, and local-control structure still in force today.3Maine State Legislature. Maine Legislative Document 1719 – Marijuana Legalization Act The state created the Office of Marijuana Policy in 2019, later renamed the Office of Cannabis Policy, to run the new market.4Maine State Legislature. Medical Cannabis In Maine (Archived) The first recreational retail stores opened in October 2020, roughly four years after the vote.5Office of Cannabis Policy. Office of Cannabis Policy – Frequently Asked Questions
What Adults Can Legally Possess and Use
If you are 21 or older, you can possess up to 2.5 ounces of cannabis at a time. That 2.5-ounce cap can be a combined total of flower and concentrate, but no more than 10 grams of it can be concentrate.6Maine State Legislature. Title 28-B 1501 – Personal Adult Use of Cannabis and Cannabis Products You can give up to 2.5 ounces to another adult as a gift, but selling cannabis without a license is illegal.
Public use is prohibited. That means no cannabis on streets, in parks, on beaches, or in any public space. Use is limited to private property where the owner permits it. Retail purchases happen only at licensed stores, which must verify that buyers are 21 or older and sell products in child-resistant, labeled packaging.5Office of Cannabis Policy. Office of Cannabis Policy – Frequently Asked Questions
Retail sales carry a 14% excise tax on top of the standard 5.5% sales tax, for a combined state tax of 19.5%. The excise rate was raised from an original 10%. Medical cannabis is exempt from the excise tax.
Growing at Home
Adults 21 and older can grow up to six mature cannabis plants, 12 immature plants, and an unlimited number of seedlings for personal use. Each mature and immature plant must be tagged with your name, driver’s license or ID number, and a note stating it is for personal use. If you are growing on property you do not own, the tag also has to name the property owner.
Plants have to be kept out of public view and secured against access by anyone under 21. Municipalities can layer on additional cultivation rules, so look up your local ordinance before you plant.7Maine State Legislature. Title 28-B Chapter 3 – Personal Adult Use of Cannabis
Where You Can Actually Buy It
Legalization did not open every town to retail. A municipality’s legislative body must vote to allow cannabis establishments before any can operate there, and that opt-in applies separately to retail stores, cultivation sites, manufacturing operations, and testing labs.8Maine State Legislature. Title 28-B 402 – Local Authorization of Cannabis Establishments Within Municipalities Many rural communities have not opted in, which concentrates stores in larger towns and cities.
Even where a town says yes, cannabis businesses cannot operate within 1,000 feet of a school’s property line. A municipality can reduce that buffer by local ordinance, but not below 500 feet. “School” here covers public preschool through grade 12, including private schools.8Maine State Legislature. Title 28-B 402 – Local Authorization of Cannabis Establishments Within Municipalities
Penalties for Going Over the Limit
Possession above 2.5 ounces is still a violation. Between 2.5 and 8 ounces is a civil offense with a fine. Above 8 ounces, charges can become criminal and include possible jail time. Selling cannabis without a license carries steeper fines and potential criminal prosecution.9Maine State Legislature. Title 28-B 103 – Unauthorized Conduct; Penalties
Driving After Using Cannabis
Operating a vehicle while impaired by cannabis is treated the same as an alcohol OUI. Certified drug recognition experts can require blood or urine testing when they have probable cause to believe a driver is impaired, and both the test results and the expert’s assessment are admissible in court.10Maine Legislature. Title 29-A 2525 – Drug Impairment Assessment Maine counts prior offenses on a 10-year lookback.
- First offense: minimum $500 fine, 150-day license suspension, no mandatory jail.
- Second offense: minimum $700 fine, three-year license suspension, at least seven days in jail.
- Third offense: minimum $1,100 fine, six-year license suspension, at least 30 days in jail.
- Fourth or subsequent offense: minimum $2,100 fine, eight-year license suspension, at least six months in jail.
Refusing a chemical test, causing serious injury, or driving with a passenger under 21 can push the penalties higher.
Sealing an Old Marijuana Conviction
People convicted of certain marijuana offenses committed before January 30, 2017 can petition a court to seal those records. Eligible offenses include low-level possession and certain cultivation charges classified as Class D crimes under the old law.11State of Maine Judicial Branch. Sealing Your Criminal Record
To qualify, you have to meet all of the following:
- At least four years have passed since you fully completed your sentence, including jail time, probation, fines, restitution, and community service.
- You have no other adult criminal convictions in Maine and no cases dismissed through deferred disposition since completing your sentence.
- You have no criminal convictions in any other state or jurisdiction since completing your sentence.
- You have no pending criminal charges anywhere.
Sealing is not automatic. You have to file a petition and ask the court. A 2024 law removed a previous age-related prerequisite, broadening eligibility. As of early 2026, lawmakers are considering legislation that would automate sealing for eligible records, but it has not been enacted. Petitions have climbed quickly: 14 in 2023, 47 in 2024, and 173 in 2025, though approval rates remain modest.
Workplaces and Federal Law
Legalization did not override every rule you might run into. Employers are not required to allow cannabis use at work. Medical cannabis cardholders have explicit protection against employment discrimination based solely on their patient status, unless accommodating that status would violate federal law or jeopardize federal contracts or funding. Since November 1, 2023, workplace drug testing programs in Maine must detect active THC rather than inactive metabolites, so a positive result points to recent use that could indicate impairment rather than consumption from days or weeks earlier. Employers who want drug-free workplace policies must have them approved by the Maine Department of Labor’s Bureau of Labor Standards. If you test positive after an on-the-job injury and intoxication contributed to the incident, workers’ compensation benefits can be denied.
Cannabis also remains a Schedule I controlled substance under federal law. That creates ongoing complications for banking, interstate commerce, and anyone who holds federal contracts, regardless of what Maine law permits.