Missouri HB 2641 Is Now Law: What Changes for Hemp on November 12

Missouri's hemp bill is no longer a proposal. Governor Mike Kehoe signed House Bill 2641 on April 23, and its main provisions take effect on November 12. For hemp retailers, distributors and consumers in Missouri, the law changes who can sell intoxicating hemp products, where they can be sold and who can make them.

This report covers what the law does, which beverages have a short exception, where the federal lawsuit stands and what Missouri businesses should be doing before November 12. It is for general information and is not legal advice.

How HB 2641 Became Law

HB 2641 was sponsored by Rep. Dave Hinman, R-O'Fallon, with a similar Senate version sponsored by Sen. David Gregory. Kehoe said the House and Senate votes combined came to 151 in favor and 28 against, the Missouri Independent reported.

Before the signing, the Missouri Hemp Trade Association delivered 10,000 handwritten letters to the governor's office asking for a veto. The association gathered the letters in 10 days. Kehoe signed the bill anyway.

What Changes on November 12

Starting November 12, Missouri law treats covered intoxicating hemp-derived cannabinoid products as marijuana. Under the Missouri Department of Health and Senior Services guidance issued September 28, licensed marijuana facilities may acquire, use and sell hemp-derived cannabinoid products from outside Missouri's licensed marijuana system only if they contain no more than 0.4 milligrams of total THC. Higher-potency products are treated as marijuana under the state's rules. Synthetic cannabinoids and cannabinoids produced through chemical conversion or modification of other cannabinoids remain prohibited for licensees, regardless of their THC level. The exact treatment of a product depends on its composition, how its cannabinoids were produced and the law's effective-date provisions.

For covered products, that means:

• They can only be sold by businesses holding a Missouri marijuana facility license. The state's guidance says the sale or distribution of intoxicating hemp products without that license is prohibited and may result in fines or criminal prosecution
• They must be grown and manufactured in state-licensed facilities
• Buyers must be 21 or older
• Unlicensed sellers, including online sellers, can no longer sell them to Missouri buyers. Orders and deliveries through licensed marijuana facilities must follow the rules that apply to those facilities
• Marijuana-style testing, packaging and labeling rules apply, Missourinet reported

Who enforces the law

The Department of Health and Senior Services, through its Division of Cannabis Regulation, regulates licensed marijuana facilities and issues guidance for them. Under HB 2641, the department, the Attorney General, the Department of Public Safety, the Missouri State Highway Patrol, prosecuting and circuit attorneys and other state agencies work together to enforce the law, according to the legislature's bill summary. The same summary says violations are a Class D felony with a fine of $5,000 per transaction.

How the State Timeline Differs From the Federal Timeline

Missouri's law and the federal hemp changes are separate, even though they share a date. Congress amended the federal definition of hemp in November 2025 through Section 781 of Public Law 119-37, with the changes originally set to take effect on November 12, 2026. A later federal law, Public Law 119-103, delayed most of those changes until December 11, 2026. The delay does not cover everything. Under Section 2019 of that law, the part of Section 781 that excludes cannabinoids not capable of being naturally produced by the cannabis plant still applies on November 12, while the rest of the federal changes, including the 0.4 milligram per container limit, wait until December 11.

HB 2641 has its own effective-date provisions. Under Section 195.900 of the Missouri statutes, the law takes effect on November 12 for specified categories, including:

• Products containing cannabinoids that cannot naturally be produced by the cannabis plant
• Products containing naturally producible cannabinoids that were synthesized or manufactured outside the plant
• Smokable or vapeable raw plant material, flower or bud products containing any amount of THCA
• Certain solid edibles, such as gummies, candies, tablets and baked goods, containing hemp-derived delta-9 THC above the concentration naturally present in the source plant

For other hemp-derived cannabinoid products, the law's application is conditional. If Congress delays the relevant federal hemp restrictions, Missouri's provisions apply to those products only during periods when the federal restrictions prohibit them.

In other words, the federal delay to December 11 does not automatically delay every Missouri restriction. Products in the categories the bill specifies fall under the state law on November 12 regardless of what happens in Washington. Businesses should check the state requirements for each product separately from the federal timeline.

A Limited Exception for Certain Hemp THC Beverages

There is a limited exception for some hemp THC beverages. According to the Department of Health and Senior Services, beverages that have naturally occurring cannabinoids and were not synthesized or manufactured outside the plant will not fall under the state's marijuana framework until December 11, 2026, provided they are not sold to anyone under 21.

This exception does not cover every drink marketed as hemp-derived THC. A beverage made with synthesized or converted cannabinoids does not qualify, so retailers cannot sort their inventory by the word "beverage" on the label alone.

The longer term picture for beverages depends on Congress. Hinman has said that if federal rules on drinks change, lawmakers will have to look at it again when the next session opens in January, MJBizDaily reported.

Missouri Hemp Businesses Have Sued to Block the Law

On July 16, the Missouri Hemp Trade Association, along with Wisconsin based manufacturer Lifted Liquids and St. Louis based MNG 2005, filed a federal lawsuit in the U.S. District Court for the Western District of Missouri, The Marijuana Herald reported. The defendants are Governor Kehoe, Attorney General Catherine Hanaway and Department of Health and Senior Services Director Sarah Willson.

The lawsuit makes three claims:

1. Vagueness. The plaintiffs argue the law creates overlapping definitions, so that a single product can be "simultaneously legal 'hemp' and illegal 'marijuana.'"
2. Dormant Commerce Clause. They argue the law favors products grown and manufactured in Missouri over products from other states.
3. Federal preemption. They argue the law conflicts with the 2018 Farm Bill's protections for moving hemp across state lines.

The state has asked the court to dismiss the case. It argued the law clearly treats a hemp-derived cannabinoid product as marijuana, calling it "that simple," and said the challenge follows a pattern of failed lawsuits in other states, the Missouri Independent reported in August.

The case is before U.S. District Judge M. Douglas Harpool. Axios reported on October 5 that Harpool could rule before November 12, and noted that even a win for the plaintiffs would give stores about a month at most, because the broader federal changes arrive on December 11. As of October 9, no ruling had been reported. Until a court says otherwise, businesses should plan on the law taking effect as written.

What Missouri Hemp Retailers Should Do Before November 12

With about a month left, Missouri businesses selling hemp-derived THC products should be working through a few steps now:

1. Sort inventory by product type and ingredients. Separate beverages that may qualify for the December 11 exception from every other hemp THC product, and confirm that those beverages contain only naturally occurring cannabinoids.
2. Check more than the THC number. Look at total THC per container, but also at which cannabinoids a product contains and how they were produced. A product with converted or synthetic cannabinoids is treated differently even at a low THC level.
3. Plan for online sales ending. If you sell hemp THC products online to Missouri customers without a marijuana facility license, those sales end on November 12.
4. Review supplier arrangements. Talk with suppliers about returns or reallocation for products you will not be able to sell. Axios reported that some Kansas City area stores say their suppliers will not take back unsold products.
5. Talk with a lawyer. The law, the federal changes and the pending lawsuit all affect each business differently.

The stakes are significant. Violations can carry a Class D felony and a $5,000 fine per transaction, so retailers should get product-specific legal guidance before deciding which inventory can stay on sale.

Frequently Asked Questions

Q. When does Missouri HB 2641 take effect?

Its main hemp provisions take effect on November 12, 2026. Certain beverages with naturally occurring cannabinoids have until December 11, and some provisions depend on the federal timeline.

Q. Can hemp shops still sell THC products in Missouri after November 12?

Not covered intoxicating hemp products. After November 12, those can only be sold by businesses with a Missouri marijuana facility license.

Q. Can I still buy hemp THC products online in Missouri?

Unlicensed online sellers will not be able to sell covered intoxicating hemp products to Missouri buyers. Sales through licensed marijuana facilities remain subject to the rules that apply to those facilities.

Q. Is the lawsuit going to stop the law?

That is not known yet. The case is pending in federal court, and the state has asked for it to be dismissed. Axios reported the judge could rule before November 12, but no ruling had been reported as of October 9.

Q. What happens if Congress changes the federal hemp rules?

It depends on the federal action and the product category. Missouri's law has a conditional effective-date provision for certain products if Congress delays the federal restrictions, while specified categories start on November 12. Lawmakers may revisit the issue in January, so businesses should follow official state guidance and any court ruling rather than assume every product follows the same timeline.

AHAA will keep tracking HB 2641, the federal lawsuit and the federal hemp timeline, and will report each change as it happens.