Arizona marijuana laws let adults 21 and older buy, possess, and use recreational cannabis under the Smart and Safe Arizona Act (Proposition 207), passed in 2020, while medical marijuana has been legal since 2010 under the Arizona Medical Marijuana Act. The rules are generous on paper but narrow in practice: possession caps are strict, public use is a citation, driving after use can mean a DUI even when you feel sober, and federal law still treats every user as a controlled substance user for purposes of guns, federal land, and air travel.
How Much You Can Have and Buy
Recreational users 21 and older can possess up to one ounce (28 grams) of marijuana, with no more than five grams of that in concentrate form. The per-transaction dispensary purchase limit matches: one ounce total, five grams max of concentrate.1Arizona Legislature. Arizona Code Title 36 Section 36-2852 – Allowable Possession and Personal Use of Marijuana
Medical marijuana patients with a valid registry card can possess up to 2.5 ounces of usable marijuana.2Arizona Legislature. Arizona Code 36-2801 – Definitions All legal sales must go through dispensaries licensed by the Arizona Department of Health Services. Buying from a friend, an unlicensed seller, or an online marketplace is not legal, no matter the amount.
Out-of-state visitors can buy recreational marijuana with a valid government-issued ID showing they are 21 or older. Medical cards, however, are only issued to Arizona residents.
Recreational purchases carry a 16% excise tax on top of the standard state and local transaction privilege tax. Medical marijuana is exempt from the excise tax, which is one of several reasons cardholders keep renewing after legalization.
Where You Can Legally Use It
Smoking marijuana in any public place is a petty offense.3Arizona Legislature. Arizona Code Title 36 Section 36-2853 – Violations, Classification, Civil Penalty Parks, sidewalks, restaurants, bars, concert venues, and any space open to the general public are off-limits. The restriction covers every form of consumption, not just smoking. Edibles, vapes, and tinctures used in public can also draw a citation.
Private property is essentially the only legal option, and even that has caveats. Hotels, landlords, and homeowner associations can ban marijuana use on their premises. Arizona does not license consumption lounges or allow on-site use at dispensaries, so there is no commercial venue where you can legally consume.
Driving After Using Marijuana
This is where legal users most often get into serious trouble. Arizona’s DUI statute makes it illegal to drive or be in physical control of a vehicle with any drug or its metabolite in your body.4Arizona Legislature. Arizona Code 28-1381 – Driving or Actual Physical Control While Under the Influence Unlike alcohol, which has a clear 0.08% BAC threshold, marijuana has no nanogram-level safe harbor for recreational users. THC metabolites can stay detectable in blood for days or weeks after use, long after any impairment is gone.
Arizona also criminalizes driving while impaired “to the slightest degree” by any drug, which is a separate charge that does not depend on metabolite levels at all.4Arizona Legislature. Arizona Code 28-1381 – Driving or Actual Physical Control While Under the Influence The statute has an exception for drugs used as prescribed by a licensed medical practitioner, which may offer some protection to registered medical patients, but it does not shield recreational users. If you use marijuana recreationally and drive within a few days, you face real exposure to a DUI charge even feeling completely sober.
Growing at Home
Adults 21 and older can grow up to six marijuana plants at their primary residence. When two or more adults 21 or older live in the same household, the cap rises to 12 plants total, not 12 per person.1Arizona Legislature. Arizona Code Title 36 Section 36-2852 – Allowable Possession and Personal Use of Marijuana
The growing area must be enclosed, equipped with a lock or security device that keeps minors out, and not visible from any public vantage point without binoculars or other optical aids. A spare bedroom with a lock, a padlocked greenhouse, or a locked closet all qualify. An open backyard garden does not.1Arizona Legislature. Arizona Code Title 36 Section 36-2852 – Allowable Possession and Personal Use of Marijuana
Check your lease before you plant anything. Landlords and property owners can prohibit cultivation on their property, and violating that restriction can lead to eviction even though the growing itself is legal under state law.
Why a Medical Card Still Matters
Legalization did not make the Medical Marijuana Act obsolete. Cardholders can possess 2.5 ounces instead of one, skip the 16% excise tax, and receive stronger employment protections. Patients who live more than 25 miles from the nearest dispensary can also apply to cultivate up to 12 plants at home.2Arizona Legislature. Arizona Code 36-2801 – Definitions
Qualifying conditions include cancer, glaucoma, HIV/AIDS, hepatitis C, ALS, Crohn’s disease, Alzheimer’s disease, PTSD, and autism spectrum disorder, along with other chronic or debilitating conditions producing severe pain, nausea, or seizures. The state application fee is $150, reduced to $75 for SNAP recipients, and applicants must show an Arizona driver’s license or state-issued ID to prove residency.5Arizona Department of Health Services. Medical Marijuana Program Qualifying Patient Under the Age of 18 Checklist Cards last two years.
Marijuana and Your Job
Arizona treats medical and recreational users very differently at work. Under the Medical Marijuana Act, employers cannot refuse to hire, fire, or otherwise penalize a cardholder based on card status or a positive marijuana test, unless the employee used, possessed, or was impaired by marijuana on the employer’s premises or during work hours. Employers who would lose a federal monetary or licensing benefit by accommodating marijuana use are exempt from this protection.6Arizona Legislature. Arizona Code 36-2813 – Discrimination Prohibited
Recreational users get no equivalent protection. Arizona law does not stop employers from testing for THC, refusing to hire someone who tests positive, or firing an employee for off-duty use. Transportation, defense, healthcare, and aviation employers routinely enforce zero-tolerance policies because federal rules require it. And because THC metabolites linger far longer than alcohol, the gap between legal Saturday-night use and a failed drug test the following week is real.
Penalties When You Go Over the Line
The consequences scale with how far past the legal limits you go and what you were doing.
Possession Above the Limit
A recreational user caught with more than one ounce but no more than 2.5 ounces (with no more than 12.5 grams of concentrate) faces a petty offense carrying a maximum fine of $300.3Arizona Legislature. Arizona Code Title 36 Section 36-2853 – Violations, Classification, Civil Penalty Possession above 2.5 ounces falls outside the Smart and Safe Act entirely and is prosecuted under Arizona’s traditional drug statutes as a felony.7Arizona Legislature. Arizona Code 13-3405 – Possession, Use, Production, Sale or Transportation of Marijuana
Underage Possession
Someone under 21 caught with up to one ounce faces escalating consequences. A first offense carries a civil penalty of up to $100 and possible drug education. A second offense is a petty offense. A third or later offense is a class 1 misdemeanor.3Arizona Legislature. Arizona Code Title 36 Section 36-2853 – Violations, Classification, Civil Penalty
Unlicensed Sale
Selling marijuana without a license is a felony. Selling less than two pounds is a class 3 felony; two pounds or more is a class 2 felony. On top of any sentence, a mandatory fine applies: at least $750, or three times the value of the marijuana involved, whichever is greater. The court cannot waive or reduce it.7Arizona Legislature. Arizona Code 13-3405 – Possession, Use, Production, Sale or Transportation of Marijuana
Crossing State Lines
Carrying marijuana across the Arizona border, even into another legal state, can trigger federal drug trafficking charges. Federal law still classifies marijuana as a Schedule I controlled substance, and crossing a state boundary with it is a federal offense regardless of the laws on either side.
Expunging Old Marijuana Convictions
Since July 12, 2021, anyone who was arrested, charged, or convicted for conduct that is now legal can petition the court for expungement. That covers possession of up to 2.5 ounces (no more than 12.5 grams of concentrate), cultivation of up to six plants at a primary residence for personal use, and possession or transportation of related paraphernalia.
After a petition is filed, the court notifies the prosecution and gives them 30 days to respond. The court must grant the petition unless the prosecution proves by clear and convincing evidence that the person is not eligible. If granted, the conviction is vacated, records are sealed, and civil rights are restored, including firearm rights unless the person is disqualified for other reasons. A denial can be appealed to a higher court.8Arizona Legislature. Arizona Code 36-2862 – Expungement, Petition, Appeal, Dismissal of Complaints
Where Federal Law Still Bites
Arizona’s marijuana laws stop at the state line, and several federal-jurisdiction issues catch legal users off guard.
Firearms
Federal law prohibits any “unlawful user of or addicted to any controlled substance” from possessing, purchasing, or receiving a firearm or ammunition.9Office of the Law Revision Counsel. 18 U.S. Code 922 – Unlawful Acts Because marijuana is federally illegal, every marijuana user, including Arizona medical cardholders, falls into that category. ATF Form 4473, which every buyer completes at a licensed dealer, asks directly about controlled substance use. Answering “no” while using marijuana is a federal crime. This is the single biggest federal trap for legal Arizona marijuana users, and most have no idea it exists.
Federal Land
Arizona has vast federal land: the Grand Canyon, national forests, and military installations. Marijuana possession or use on any of it is illegal regardless of state law. The National Park Service enforces federal drug laws within all park units.10National Park Service. Marijuana and Other Substances
Airports and Air Travel
TSA officers do not specifically search for marijuana, but if they find it during routine screening, they must refer the matter to local or federal law enforcement.11Transportation Security Administration. Medical Marijuana Marijuana and cannabis products containing more than 0.3% THC remain illegal to carry through airport security under federal law, even on flights between two legal states.
Federally Assisted Housing
Tenants in public housing or properties with federal rental assistance face different rules. HUD has stated that owners of federally assisted housing cannot adopt policies affirmatively permitting marijuana use, and must include lease provisions allowing termination when a tenant uses a controlled substance illegal under federal law.12U.S. Department of Housing and Urban Development. Use of Marijuana in Multifamily Assisted Properties Property owners have discretion on whether to actually evict, but the authority is there regardless of Arizona legalization.