Having a valid card feels like it should settle the question, and often it does not entirely. Florida’s medical marijuana program creates real protection, but that coverage has specific limits most cardholders never learn about until they are already dealing with an arrest.
- The card is a defense, not immunity: it has to be raised and proven, not just possessed.
- Out-of-state cards do not work here: Florida only recognizes cards issued through its state registry.
- There are hard possession limits: exceeding them removes the protection even for a registered patient.
- Driving impaired is still a crime: a valid card does not cover operating a vehicle while impaired.
- Firearms create a separate federal problem: state permission does not resolve a conflict with federal gun law.
Does my card automatically protect me from an arrest?
Not automatically. A valid Florida medical marijuana card functions as an affirmative defense to a possession charge, meaning it has to be raised and established, not simply held up at the moment of arrest. An officer without immediate access to the state registry can still make an arrest, leaving the card’s protection to be resolved through the legal process rather than on the spot. See our full guide on what happens after a Florida drug possession arrest for the process that follows from there.
Does my card from another state work in Florida?
No, and this is the single biggest source of confusion for visitors. Florida only recognizes cards issued through its state Medical Marijuana Use Registry under Fla. Stat. § 381.986. A card that is entirely valid in another state provides no legal protection here, and someone visiting Florida is treated the same as anyone else in possession without a valid Florida card.
Is there a limit to how much I can legally possess?
Yes. Exceeding the registry limits removes the protection the card otherwise provides. Florida law generally permits up to 2.5 ounces of smokable marijuana within a 35-day period, with a maximum of 4 ounces kept at home at any time. Possessing more than the registry allows can result in charges even for someone who is validly registered, since the defense covers compliant possession, not any amount.
How long does the state have to file a charge like this?
The same deadline that applies to possession charges as a whole. Under Fla. Stat. § 775.15, prosecutors typically have three years to file a felony-level possession charge, and two years for the misdemeanor tier that covers small amounts of marijuana. Whether a valid card resolves the charge does not change how long the state has to bring it in the first place.
Are concentrates like wax or oil covered the same way?
Not necessarily. Concentrates such as wax, oil, and shatter fall under separate legal treatment from smokable flower under Florida law, and the same possession limits and protections do not automatically transfer. A card that clearly covers flower purchased at a licensed dispensary does not resolve every question about a concentrate product in the same way.
Can I still be charged with DUI if I have a valid card?
Yes. Florida has no specific per se THC limit the way it does for blood alcohol, but officers can still arrest someone for driving under the influence if impairment is apparent, regardless of card status. A medical marijuana card explains why THC is present in someone’s system, but it does not provide a defense to driving while impaired.
Does having a card create problems with firearms?
It can, and this catches many cardholders by surprise. Florida state law does not prohibit a medical marijuana cardholder from owning a firearm, but federal law treats registered users as prohibited persons under 18 U.S.C. § 922(g)(3), regardless of state permission. This conflict between state and federal law remains unresolved and creates real exposure for a cardholder who also owns firearms.
What should I do right now if I was arrested despite having a card?
Avoid discussing the specifics of the arrest with anyone other than an attorney. A single, direct sentence covers most situations: “I am invoking my right to remain silent, and I want a lawyer.” Documentation of active registry status matters, but raising it correctly as a defense is a legal process, not something resolved at the scene. See our page on what happens right after an arrest for how the First Appearance process works from here.
If this just happened to you
Every case turns on the specific registry status, the amount involved, and the circumstances of the stop, and that requires a real review, not a guess. Cases in Miami-Dade are handled locally, through the Eleventh Judicial Circuit.
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