Is THCA Legal in Minnesota? What State Law Says in 2026

THCA in Minnesota at a glance

Status	Legal with restrictions
Age limit	21+
Sale	Only OCM-licensed cannabis retailers may sell THCA flower or other hemp-derived consumer products; hemp edible retailers may not.
Possession	Adults 21+ may carry up to 2 ounces of adult-use flower in public and keep up to 2 pounds at home.
Product rules	OCM may set total-THC limits (THCA x 0.877 plus all THC) for flower and hemp-derived consumer products; up to 2 ounces of flower-based products per transaction.
Licensing	OCM cannabis retailer licence, or microbusiness or mezzobusiness licence with a retail endorsement.
Key law	Minn. Stat. §§342.01 subds. 37, 41, 42, 69b; 342.06; 342.09; 342.27; Laws 2026, c. 123
Last major change	27 May 2026

What Minnesota law says about THCA

Minnesota defines a hemp plant by delta-9 THC (no more than 0.3% on a dry weight basis), but chapter 342 treats harvested hemp flower as hemp plant parts, and any product for human consumption that contains hemp plant parts is a hemp-derived consumer product.¹ No one may sell these without an OCM licence authorising the sale, and lower-potency hemp edible retailers are expressly barred from selling them, which leaves licensed cannabis retailers as the lawful outlet.²³

Cannabis retailers may sell up to 2 ounces of adult-use flower or hemp-derived consumer products made mainly of hemp plant parts in one transaction, only to customers 21 and over.³ The statute defines total THC as THCA multiplied by 0.877 plus all tetrahydrocannabinols, and section 342.06 lets OCM set total-THC limits for cannabis flower and hemp-derived consumer products and requires OCM approval of product categories.¹⁴

Adult-use cannabis flower, which is naturally high in THCA, has been legal to possess since 1 August 2023. Laws 2026, chapter 123 repealed the older hemp statute (section 151.72) in May 2026, so hemp-derived products are now governed only by chapter 342.⁵

Local rules

Local governments cannot ban possession or use but may regulate time, place and manner of retail operations and limit cannabis retailers to no fewer than one per 12,500 residents.

Pending changes to watch

None identified as of September 2026.

How the federal hemp change affects Minnesota

Separate from Minnesota law, the federal definition of hemp is changing. Under the federal hemp redefinition passed in the FY2026 appropriations law, from 11 December 2026 hemp is measured by total THC, which counts THCA as well as delta-9 THC, and finished products are capped at 0.4 mg of total THC per container. High-THCA flower sold as hemp today will not meet that definition, so from that date it is treated as marijuana under federal law, whatever state law says.

Bills to delay or repeal the change are in congressional committees, but none had advanced as of September 2026. Our explainer on the federal hemp THC limit covers the detail, and THCA vs delta-9 THC explains why heat turns THCA into delta-9.

Timeline of recent changes

• 27 May 2026: Old hemp statute (section 151.72) repealed; hemp flower and other hemp-derived products governed only by chapter 342.
• 1 August 2023: Adult-use cannabis possession became legal under Laws 2023, c. 63.

THCA in neighbouring states

Rules change at the state line. Here is how THCA is treated in the states bordering Minnesota, as of September 2026:

• Wisconsin: Unclear (post-decarb hemp test)
• Iowa: THCA flower and vapes banned
• South Dakota: High-THCA flower illegal
• North Dakota: Banned above 0.3% total THC

Carrying products across state lines can break the law of the state you enter, and federal law also applies. Check the destination state’s rules first.

Delta-8 in Minnesota

Delta-8 is treated differently: in Minnesota it is Cannabis retailers only, 21+ as of September 2026. Read our guide to Delta-8 law in Minnesota, or compare the two compounds in THCA vs Delta-8.

Frequently asked questions

Can smoke shops sell THCA flower in Minnesota?

Not without an OCM licence that authorises the sale. THCA hemp flower is a hemp-derived consumer product, and Minnesota bans selling these without such a licence. Lower-potency hemp edible retailers cannot sell them either, so licensed cannabis retailers are the lawful source.

How much THCA flower can I buy in Minnesota?

A licensed cannabis retailer may sell up to 2 ounces of adult-use flower or hemp-derived consumer products made mainly of hemp plant parts in a single transaction. Adults 21 and over may carry up to 2 ounces of adult-use flower in public and keep up to 2 pounds at home.

Does Minnesota count THCA in total THC?

Yes, for product limits. Chapter 342 defines total THC as THCA multiplied by 0.877 plus all tetrahydrocannabinols, and OCM may set total-THC limits for flower and hemp-derived consumer products. The statutory definition of a hemp plant itself still refers to delta-9 THC.

Sources

1. Minnesota Statutes. Section 342.01, Definitions (2025, as amended by Laws 2026, c. 123). revisor.mn.gov
2. Minnesota Statutes. Section 342.09, Personal Adult Use of Cannabis (including subd. 4, unlicensed sale prohibited). revisor.mn.gov
3. Minnesota Statutes. Section 342.27, Cannabis Retailer; Operations. revisor.mn.gov
4. Minnesota Statutes. Chapter 342, Cannabis Management (including §342.06, product approval and total-THC limits; §342.13, local control). revisor.mn.gov
5. Minnesota Legislature. Laws 2026, chapter 123 (S.F. 4401), signed 26 May 2026; repeals section 151.72 from the day after final enactment; most sections effective 1 August 2026. revisor.mn.gov

Editorial note: This page is general legal information, not legal advice, and reflects our reading of Minnesota and federal law as of 24 September 2026. Hemp and cannabis laws change quickly and are enforced differently by different agencies and localities. If you sell, ship or carry these products, check the current rules with the relevant state agency or a licensed attorney.

See the full state-by-state THCA table →