Cannabis in Wyoming — The 0.3-Gram Concentrate Felony Cliff
Wyoming is among the strictest cannabis-prohibition states in the United States. The defining feature is the 0.3-gram concentrate felony cliff under Wyo. Stat. Ann. § 35-7-1031: any concentrate above 0.3 grams — roughly the contents of a single low-end vape cartridge or one dab — is a felony with up to 5 years in prison and $10,000 fine. Combined with the "internal possession" doctrine (metabolites alone can support a possession charge) and no per-se THC DUI limit, returning from Colorado’s I-25 dispensaries carries unusually layered legal risk.
Wyoming is among the strictest cannabis-prohibition states in the United States. The defining feature is the 0.3-gram concentrate felony cliff under Wyo. Stat. Ann. § 35-7-1031: any concentrate above 0.3 grams — roughly the contents of a single low-end vape cartridge or one dab — is a felony with up to 5 years in prison and $10,000 fine. Read the colorado i25, browse the cheyenne warren afb, understand the cowboy state paradox, and check out the hemp extract act 2015.
The Cowboy State Paradox — Libertarian Identity, Prohibitionist Reality
Wyoming brands itself the "Cowboy State" and the "Equality State" — its frontier identity celebrates rugged individualism, suspicion of federal overreach, and a libertarian streak that produced the first state constitution to grant women suffrage in 1869. Yet Wyoming is among the most prohibitionist cannabis states in the United States. The political establishment has prioritized social-conservative policy commitments and law-enforcement institutional preferences over the small-government argument.
The 2024 ballot petition gathered 48,687 raw signatures for the medical Wyoming Patient Cannabis Act and 47,426 for the decriminalization measure by the March 2023 deadline — exceeding the statewide minimum. However, the geographic distribution requirement (15% in 2/3 of counties = 16 of 23) was met in only 14 counties, so neither qualified. As of May 2026, no cannabis initiative has been certified for the November 3, 2026 ballot. Six consecutive legislative sessions (2017–2026) have killed every meaningful medical or decriminalization bill.
Wyoming is among a small group of states (alongside Kansas and parts of Texas) where any concentrate over 0.3 grams — roughly the contents of a single low-end vape cartridge or one dab — is a felony with up to 5 years and $10,000. The carrier-weight rule under § 35-7-1031(d) means edibles, gummies, and cookies count toward thresholds by total package weight. Defense attorneys have repeatedly flagged this as the single most underestimated felony exposure in Wyoming drug law.
Wyoming Stat. § 35-7-1031(c) makes it unlawful to "knowingly or intentionally possess a controlled substance." Wyoming has historically allowed prosecutions where the only "possession" alleged is THC metabolites detected in blood or urine after consumption elsewhere. A Wyoming driver lawfully consuming cannabis in Denver Saturday and driving back into Cheyenne Sunday with no product in the vehicle can face both a DUI under § 31-5-233(b)(iii)(B) and an independent possession charge.
Cheyenne sits ~100 miles north of Denver via I-25, the dominant cross-border market. Sheridan, Buffalo, Gillette, Cody residents drive north to Montana adult-use (legal since January 2022). South Dakota (medical only) and Idaho (full prohibition) limit other directions. Wyoming Highway Patrol operates 12 K-9 units (10 narcotic, 2 explosives); one 2016 Laramie County weekend deployment yielded 313 lbs of marijuana, 25 felony charges, and 26 misdemeanors over 400 traffic stops.
Wyoming SF 32 (signed Mar 7 2024, effective July 1 2024) banned delta-8 THC, synthetic cannabinoids, and any hemp product over 0.3% total THC. The 10th Circuit upheld the ban October 27, 2025 in Green Room LLC v. Wyoming (joined 4th and 8th Circuits holding the 2018 Farm Bill does not preempt stricter state hemp definitions). The November 2025 federal continuing-resolution provision capping hemp products at 0.4 mg THC per package takes effect approximately one year after enactment (late 2026), further constricting the legal hemp-derived intoxicant market.
Where Federal Bases, Energy Industry, and Cross-Border Drives Sit
Cheyenne (state capital, F.E. Warren AFB ground zero for $141B Sentinel program), Casper (oil & gas, strict drug-testing culture), Laramie (UW, Rep. Provenza’s district), Sheridan / Buffalo / Gillette / Cody (northern Montana-border drives), Jackson (most progressive WY city), Riverton / Lander (adjacent to Wind River, Sen. Cale Case’s district).
Wyoming’s Singular Status: Prohibition Surrounded by Legal Markets
Colorado adult-use (since January 2014), Montana adult-use (since January 2022), South Dakota medical (2020), Utah medical pharmacy-only. Only Idaho and Nebraska share Wyoming’s full-prohibition posture. WYSAC December 2020 polling: 85% medical / 54% adult-use support — but the Republican legislative supermajority + Wyoming Freedom Caucus + the geographic-distribution-test ballot threshold (highest in U.S.) have produced a uniquely effective prohibition framework. 2028 ballot is now the primary target.
The 2024 Geographic FailureFor in-depth cannabis education, dosing guides, safety information, and research summaries, visit our partner site TryCannabis.org