Drug Offenses

Three ounces or less of dried, unprocessed marijuana if you are 21 or over, under Mo. Const. art. XIV, § 2. With a registration card you may also cultivate up to six flowering plants, six nonflowering plants over fourteen inches and six clones, in a locked space at a single residence, not visible from a public place.

Between three and six ounces — up to twice the limit — is a civil matter for a first and second violation: up to $250, then up to $500. Only on a third does it become a misdemeanor with a fine up to $1,000.

Above six ounces, the constitutional tolerance is gone and § 579.015 applies — a class D felony above 35 grams. Note the arithmetic does not line up neatly: three ounces is roughly 85 grams, well above the statute’s 35-gram felony line. The statute was never amended; the constitution overrides it only for conduct it protects.

Yes, in more situations than people expect. If you are under 21, none of the constitutional protection applies to you and § 579.015 operates in full. Driving under the influence of marijuana is a DWI — see DWI and DUI. Public consumption, and smoking anywhere tobacco smoking is prohibited, remain unlawful.

Cultivation outside a locked space, or visible from a public place, or without a registration card, is not protected. Possession at schools, correctional facilities and daycares remains prohibited. And unlicensed sale is a criminal offense under § 579.020, not a civil penalty — selling to friends at cost is still delivery.

Federal law is a separate matter entirely, and marijuana remains federally controlled regardless of Missouri law — which matters on federal land, in federal employment, and for firearms purchase forms.

Check rather than assume. Article XIV required courts to expunge qualifying marijuana offenses automatically by 8 June 2023 for misdemeanors and 8 December 2023 for felonies — but compliance varied across circuits, and records remain uncleared in some counties.

Eligibility also turned out narrower than the ballot language suggested. In C.S. v. Missouri State Highway Patrol, No. SC100944 (Mo. banc, October 2025), the Missouri Supreme Court limited “marijuana offense” to offenses involving three ounces or less — which excludes many felony possession cases.

Pull your own record: a Missouri State Highway Patrol criminal history check plus a Case.net search. If it did not clear and you qualify, a petition is available. If you fall outside the constitutional route, the general statute may still work. See expungements.

They can charge you. Whether they can convict you is a different question, and it turns on constructive possession.

The State must prove you knowingly possessed the substance and were aware of its nature. Mere presence is not possession, and proximity is not possession. With multiple occupants and drugs found in a shared or concealed space, the State is asking a jury to infer knowledge and control from circumstances.

What matters: where exactly it was found, who owned or was driving the vehicle, whether anything tied it to you specifically, whether anyone claimed it, and what you said. Which is the practical point — the single most damaging thing in these cases is almost always a statement. Say you want a lawyer, and stop.

Potentially decisively. A warrantless search is presumptively unreasonable, and the State must justify it under a recognized exception — consent, automobile exception, search incident to arrest, plain view, exigency, inventory.

Each of those has requirements that are frequently not met. Consent must be voluntary, not mere submission to authority. A traffic stop may not be prolonged beyond its purpose to wait for a dog. An inventory search must follow standardized procedure rather than be a pretext. Plain view requires lawful presence and immediately apparent incrimination.

If the search was unlawful, the evidence can be suppressed — and in a drug case suppression usually ends it, because the substance is the case. This is why the police report, the body camera footage and the timeline matter more than anything the substance turns out to be.

Enormous. Simple possession of a controlled substance is a class D felony under § 579.015. Delivery, or possession with intent to distribute, is generally a class C felony under § 579.020 — which carries a three-year statutory minimum that a class D does not.

Intent is almost never proven by an observed sale. It is inferred: quantity beyond personal use, packaging in separate baggies, digital scales, large amounts of cash in small denominations, ledgers, text messages.

Every one of those inferences is arguable. People who use in quantity also buy in quantity. Scales have innocent uses. Cash is not evidence of anything by itself. Moving a case from delivery to possession removes a minimum and changes the entire sentencing conversation — it is frequently the most valuable thing achievable.

Because the legislature set them that way, and it catches people badly. Under § 579.065 and § 579.068, trafficking thresholds for fentanyl and carfentanil are more than 10 milligrams for the lower tier and 20 milligrams or more for the higher — while methamphetamine and heroin thresholds are 30 and 90 grams.

A quantity that would be simple possession of another substance can be first-degree trafficking as fentanyl, and first-degree trafficking at the higher tier is a class A felony — ten to thirty years or life, with no statute of limitations.

This makes laboratory identification and weight central rather than technical. What the substance actually is, how much of it is attributable to the defendant, and whether the analysis is reliable are the case. Counsel should be involved before any of that is conceded.

Frequently, and it is often the outcome that serves the person best. Missouri operates treatment court divisions under § 478.001 — described as specialized, nonadversarial divisions for substance-involved offenders — and on successful completion charges or penalties “may be dismissed, reduced, or modified.”

Eligibility is not set by statute. It is governed by local rules and the Missouri Treatment Court Standards and genuinely varies by circuit, so nobody can tell you whether you qualify without knowing your county. The Standards do direct courts to use written objective criteria and a validated risk assessment rather than excluding people automatically by charge type.

Other routes exist too: probation with treatment conditions, the § 559.115 120-day programme, and in some counties diversion. Raise it early — entry is easier to negotiate before positions harden.

Many can. Under § 610.140 the wait is three years after completing the sentence for a felony and one year for a misdemeanor, with lifetime caps of two felonies and three jailable misdemeanors.

The exclusions to check are class A felonies and dangerous felonies — which reaches first-degree trafficking at the higher tier — and the enumerated list in § 610.140.3. A simple possession class D felony is generally eligible; a class A trafficking conviction is not.

Marijuana offenses may have their own constitutional route under Article XIV, subject to the three-ounce limit the Supreme Court imposed in 2025. Because the caps are a lifetime allowance, it is worth planning which cases to clear rather than filing reflexively.

A great deal. A felony conviction costs firearm rights under § 571.070 and federal law. Professional licences — nursing, pharmacy, commercial driving, education — are frequently affected, sometimes by the charge alone before any conviction.

For non-citizens, controlled substance offenses are among the most dangerous categories in immigration law; some are removable offenses even as misdemeanors, and this must be analyzed before a plea rather than after.

Also: federal student aid, public housing eligibility, and driving privileges in some circumstances. And note § 571.030.1(11) — possessing a firearm while in felony possession of a controlled substance is itself a class E felony, which is how a drug case becomes a firearms case.

No. In drug cases specifically, the request is usually to identify a supplier or make a controlled buy, and it is presented as the way out.

Any cooperation agreement should be negotiated by your lawyer, in writing, with the benefit specified before you do anything. Informal promises — “we’ll talk to the prosecutor,” “this will go away” — are not enforceable, and people give up leverage and safety on the strength of them every week.

There is also a real physical risk in becoming a cooperating witness that is not always explained. Say you want a lawyer, say nothing else, and let the arrangement be made properly if it is made at all.

Flat fee, quoted before work begins and scoped to a stage. A simple possession misdemeanor and a trafficking indictment are different engagements by an order of magnitude, and you should have the number in writing before you decide.

Where the money goes in a serious case: investigation, independent laboratory review, and suppression litigation. That last one is where drug cases are actually won, and it is worth the investment because success on a motion typically ends the case rather than improving the offer.

The consultation is free and honest. If the exposure is limited and the sensible course is to resolve it quickly and cheaply, that is what you will be told.