Is HHC Legal in Wyoming?

Last reviewed: May 22, 2026

No. Wyoming banned hexahydrocannabinol (HHC) alongside other psychoactive hemp cannabinoids when Governor Mark Gordon signed Senate File 32 on March 7, 2024 (Senate Enrolled Act 24, effective July 1, 2024). The bill rewrote the hemp definition in W.S. 11-51-101 to exclude any "synthetic substance" and expanded "THC" to expressly name HHC along with delta-8, delta-10, THC-O, THCP, and other psychoactive isomers and analogs. The 10th Circuit Court of Appeals upheld the statute in Green Room v. Wyoming, No. 24-8053, on October 27, 2025.

Wyoming Cannabis & Hemp Overview

Wyoming has no adult-use cannabis program and no comprehensive medical cannabis program. The narrow Wyoming Hemp Extract Act (W.S. 35-7-1901 et seq., 2015 HB 32) allows low-THC, high-CBD extract under neurologist certification for intractable epilepsy. There is no dispensary network. Marijuana possession of three ounces or less is a misdemeanor under W.S. 35-7-1031(c) with up to 12 months in jail and a $1,000 fine.

HHC is produced commercially by hydrogenating hemp-derived CBD or delta-9 THC. The hydrogenation saturates the double bond that defines the THC family, which is the academic argument that HHC vendors have used in federal Farm Bill states. Wyoming's 2024 statute closes that argument by naming HHC directly and by excluding chemically converted substances from hemp.

What Wyoming Law Actually Says

W.S. 11-51-101(a), as amended by 2024 SF 32, defines "hemp" as Cannabis sativa L. and parts of the plant with no synthetic substances and a THC concentration not exceeding 0.3 percent on a dry weight basis. The amended definition of "THC" expressly names HHC alongside delta-9, delta-8, delta-10, THC-O, and THCP. The same provision defines "synthetic substance" to include synthetic THC, synthetic cannabinoids, and other psychoactive substances produced through chemical processes.

HHC produced by hydrogenation from hemp-derived CBD or delta-9 is both a covered "THC" and a "synthetic substance" within W.S. 11-51-101. Either path disqualifies HHC products from the Wyoming hemp definition. Products that fail the Wyoming hemp definition are treated as marijuana under W.S. 35-7-1031 for enforcement purposes.

The 10th Circuit's October 27, 2025 ruling in Green Room v. Wyoming, No. 24-8053, confirmed that the 2018 federal Farm Bill does not preempt Wyoming's stricter hemp rules. The court rejected federal preemption, dormant Commerce Clause, and vagueness challenges to the statute.

How Enforcement Has Played Out

Wyoming retailers received notice of the SF 32 effective date and most pulled HHC inventory before July 1, 2024. Compliance sweeps in 2024 and 2025 led to product seizures at hemp retailers that continued to sell HHC and other excluded cannabinoids. The 10th Circuit ruling in October 2025 ended the federal-preemption defense that retailers had been raising. Federal H.R. 5371 §781, signed November 12, 2025 and effective November 12, 2026, brings federal law into line with Wyoming by excluding hydrogenated and other chemically converted cannabinoids from hemp.

What This Means for Retailers Selling HHC in Wyoming

• Do not sell HHC vapes, gummies, tinctures, flower, or beverages in Wyoming. The SF 32 prohibition applies to all product formats.
• Document destruction of any pre-ban inventory. Wyoming has enforced after the July 1, 2024 effective date.
• Block Wyoming ZIP codes for online sales of HHC products. Federal Farm Bill compliance is not a defense in Wyoming after Green Room.
• Track the 2027 general session. A targeted beverage carveout has been floated in prior sessions but has not passed.
• Plan compliance burndown for the federal H.R. 5371 §781 effective date of November 12, 2026, which adopts the same synthetic and chemical-conversion exclusion nationwide.

What This Means for Consumers Buying HHC in Wyoming

You cannot legally buy HHC products in Wyoming. Most compliant out-of-state online retailers block Wyoming addresses after Green Room. Possession of HHC product exposes you to W.S. 35-7-1031 marijuana penalties. HHC metabolites overlap with delta-9 metabolites on standard urine, saliva, and hair drug tests, so use produces positive results on conventional THC panels. Specialty panels can sometimes distinguish HHC but they are uncommon.

Pending Legislation to Watch

2025 HB 267 proposed a 10 mg per container hemp-derived beverage carveout; it did not pass. 2025 HB 198 also did not advance. The 2026 budget session did not amend the SF 32 framework. Wyoming hemp retailers and farm coalitions have indicated they will push a beverage-only carveout in the 2027 general session, but any carveout will likely exclude hydrogenated cannabinoids such as HHC.

Federal H.R. 5371 §781, signed November 12, 2025 and effective November 12, 2026, redefines hemp using a total-THC test and a 0.4 mg total-THC per container cap, and explicitly excludes synthetic and chemically converted cannabinoids. HHC produced by hydrogenation is squarely within the federal exclusion. Wyoming is already stricter than the incoming federal law in most categories.

Frequently Asked Questions

Is HHC legal in Wyoming in 2026? No. Wyoming SF 32 (Senate Enrolled Act 24, effective July 1, 2024) named HHC in the W.S. 11-51-101 THC definition and excluded synthetic substances from hemp.

Did the 10th Circuit uphold the Wyoming HHC ban? Yes. Green Room v. Wyoming, No. 24-8053 (10th Cir. Oct. 27, 2025) held that the 2018 federal Farm Bill does not preempt Wyoming's stricter hemp definition.

Can I order HHC online to a Wyoming address? Most compliant retailers block Wyoming after Green Room. Possession of HHC product triggers W.S. 35-7-1031 marijuana penalties.

Does HHC show up on a drug test? Yes. HHC metabolites overlap with delta-9 metabolites on standard urine, saliva, and hair tests.

Is HHC technically a THC under Wyoming law? Yes. Wyoming's amended W.S. 11-51-101 expressly names HHC in the THC definition. The academic argument that hydrogenation removes HHC from the THC family does not apply in Wyoming.

How will federal H.R. 5371 §781 affect Wyoming HHC? Effective November 12, 2026 federal hemp will exclude chemically converted cannabinoids and cap total-THC at 0.4 mg per container. Wyoming is already stricter.

This page is provided for informational purposes by ComplyAssistAI LLC and is not legal advice. Hemp and cannabis law in Wyoming changes frequently. For business compliance questions, consult a Wyoming-licensed cannabis attorney. Find one in our Cannabis Lawyer Directory.