Maine Cannabis Laws (2026): Sales, Limits & Penalties

Quick Answer: Maine's Cannabis Legal Status

Maine voters legalized adult-use cannabis in November 2016. Governor Janet Mills signed LD 719 in 2019, establishing the regulatory framework, and licensed retail sales began in 2020. Maine has two legal cannabis systems: adult-use (MRS Title 28-B) and medical (MRS Title 22, Chapter 558-C).

The Maine Office of Cannabis Policy (OCP), part of the Department of Administrative and Financial Services (DAFS), oversees both programs. OCP manages licensing, rules, and compliance for adult-use cannabis and shares medical program oversight with DAFS.

Possession at a Glance

Note: Medical limits are under MRS Title 22, Chapter 558-C. Confirm current figures with the Maine Medical Marijuana Program, as these provisions have been amended.

Adult-Use Cannabis Laws in Maine

Maine's adult-use cannabis laws are in MRS Title 28-B. The OCP's Adult Use Marijuana Program Rules implement this statute.

Possession Limits

Adults 21 and older may possess:

• Flower: 2.5 ounces in public
• Concentrates: 5 grams
• Edibles: 2.5 ounces (by product weight, not THC content)

There is no set limit for possession on private property. However, possessing amounts that suggest intent to distribute can lead to criminal charges. Keep receipts from licensed retailers for larger quantities stored at home.

Home Cultivation

Adults 21+ can grow cannabis at their primary residence without a license, following these limits:

• 3 mature plants
• 12 immature plants
• Unlimited seedlings

Plants must not be visible from a public way or place. Local ordinances may add restrictions. Landlords can prohibit cultivation in leases, and federal housing law applies to subsidized properties.

Public Consumption and Vehicles

Consuming cannabis in public is illegal under MRS Title 28-B. "Public place" includes sidewalks, parks, and common areas of multi-unit housing. Driving or consuming cannabis in a vehicle, even when parked, is also prohibited. Maine does not have state-licensed cannabis consumption lounges, though towns may consider local options. Consumption is legal on private property with the owner's consent.

Purchasing from Licensed Retailers

Buyers must be 21 or older and show valid government-issued photo ID. Licensed adult-use retailers are the only legal source for adult-use cannabis. Buying from unlicensed sellers is illegal.

Gifting Between Adults

Adults 21+ can give up to 2.5 ounces of cannabis to another adult without payment. Any exchange of money, goods, or services for cannabis is an illegal sale if the seller is unlicensed. Maine actively investigates "gifting" schemes intended to bypass licensing laws.

Maine Medical Marijuana Program Overview

Maine's medical cannabis program operates under MRS Title 22, Chapter 558-C, the Maine Medical Use of Marijuana Act. DAFS administers the program.

Qualifying Conditions

Maine's qualifying conditions include, but are not limited to:

• Cancer
• Glaucoma
• HIV/AIDS
• Hepatitis C
• Amyotrophic lateral sclerosis (ALS)
• Crohn's disease
• Agitation of Alzheimer's disease
• Post-traumatic stress disorder (PTSD)
• Intractable pain (pain unresponsive to standard treatment)
• Multiple sclerosis
• Epilepsy and other seizure disorders
• Cachexia or wasting syndrome

Physicians can also certify patients for other debilitating conditions case-by-case. Consult the Maine Medical Marijuana Program or a licensed physician for the current complete list, as the Legislature has added conditions over time.

Patient Registration

Patients need written certification from a Maine-licensed physician, physician assistant, or nurse practitioner. Submit this certification to the Maine Medical Marijuana Program via DAFS to get a registry identification card. The card must be renewed annually. Fees vary; check the Maine Medical Marijuana Program (maine.gov/dafs/ocp) for the current fee schedule.

Caregiver Registration and Responsibilities

Registered caregivers can assist up to five patients under MRS Title 22, Chapter 558-C. Caregivers must register with the state and can grow cannabis for their patients. A caregiver may also operate as a small-scale commercial seller under specific conditions, overseen by OCP. Caregiver cultivation limits depend on the number of patients served. Contact OCP for the current per-patient plant count, as this has been revised by the Legislature.

Possession and Cultivation for Medical Patients

Registered patients can possess up to 2.5 ounces of prepared cannabis in public. Home cultivation is allowed: patients may grow up to 6 mature plants, 12 immature plants, and unlimited seedlings under MRS Title 22, Chapter 558-C. Caregivers cultivating for multiple patients have higher total limits based on patient count.