Last verified: May 2026
The 1927 Kansas Marijuana Prohibition
Kansas first criminalized marijuana in 1927 — a decade before the federal Marijuana Tax Act of 1937 — as part of a wave of state-level cannabis prohibitions that swept the western United States from approximately 1913 (California) through the late 1920s.
The 1927 Kansas statute was, like most of its contemporaries, motivated heavily by xenophobic concerns about Mexican migrant labor. The early-20th-century pattern across the western U.S. was that cannabis prohibition statutes were enacted shortly after Mexican migration produced visible cultural cannabis use in border-region cities. The framing in legislative debates of the era explicitly tied cannabis to immigration, Mexican-American communities, and racialized stereotypes.
That history remains an under-discussed strand of Kansas drug policy genealogy — the racialized origins of the state’s cannabis prohibition continue to shape how the policy operates a century later.
The "Hemp for Victory" WWII Campaign
Industrial hemp cultivation was widely promoted by the U.S. government during World War II to support the war effort. The Marijuana Tax Act of 1937 had effectively banned hemp production federally, but war-time fiber demand produced a reversal: the 1942 USDA film "Hemp for Victory" encouraged American farmers to plant hemp for naval rope, parachute webbing, and other military uses.
Kansas, with its vast agricultural land and strategic central-U.S. location, was a major Hemp for Victory production state. Cannabis sativa was planted across Kansas, Nebraska, Iowa, Indiana, and Missouri during the war. After the war ended and federal demand collapsed, the planted cannabis naturalized as a feral weed.
"Ditch Weed" — The Naturalized Hemp
Cannabis sativa, having been planted across Kansas during WWII, naturalized as a feral weed and has persisted along railway right-of-ways, ditches, and abandoned farmsteads ever since. The plants do not contain enough THC to produce intoxication — "ditch weed" typically tests at well under 0.3% delta-9 THC and would qualify as legal hemp under the 2018 Farm Bill.
Despite the lack of THC content, the Drug Enforcement Administration’s Domestic Cannabis Eradication/Suppression Program has destroyed approximately:
- 4.7 billion feral hemp plants since 1984 (per Vote Hemp / Jon Gettman analysis).
- 4.2 million cultivated marijuana plants in the same period.
The 1,000:1 ratio of feral-hemp to cultivated-marijuana eradications reflects decades of federal eradication funding directed at plants that posed no intoxication risk. The eradication program continues even as the 2018 Farm Bill made hemp federally legal.
The Mattivi Acknowledgment
KBI Director Tony Mattivi himself acknowledged the connection between ditch weed and modern cannabis enforcement in his October 2025 raid press conference, telling reporters:
"This isn’t the 6 or 7% THC ditch weed that a lot of people in this state are familiar with."
The framing acknowledges that older Kansans remember ditch weed as a low-potency wild plant, distinct from modern high-THC cannabis. Mattivi’s argument was that contemporary cannabis is meaningfully different from historical Kansas ditch weed — which is true on potency grounds but does not address the underlying enforcement-policy questions.
The Ditch Weed Irony
The ditch-weed history produces an exquisite irony in Kansas drug policy:
- The U.S. government planted cannabis across Kansas during WWII.
- The plants naturalized.
- For decades after, the federal DEA eradication program destroyed the same wild plants the federal government had planted.
- Kansas spent that same period maintaining one of the strictest cannabis criminal codes in the country.
- Kansas Highway Patrol troopers, KBI agents, and county sheriff’s deputies were — and continue to be — charged with enforcing prohibition on a plant that the federal government had encouraged Kansas to plant.
The 1927 Prohibition’s Continuing Effect
The 1927 Kansas marijuana prohibition has remained on the books continuously for nearly a century. Modern statutes (K.S.A. § 21-5706, § 21-5705, § 65-4105) trace their genealogy to that 1927 framework. Even the 2017 HB 2049 reform — the only major modern softening of Kansas cannabis criminal law — operates within the 1927-era prohibition framework, simply reducing penalty levels rather than altering the underlying prohibition.
The Pre-Marijuana-Tax-Act State-Prohibition Wave
Kansas’s 1927 prohibition was part of a broader wave:
- 1913: California — first U.S. state to prohibit cannabis.
- 1915: Wyoming, Utah.
- 1917: Texas, Colorado, Oregon.
- 1919: Idaho.
- 1920s: most western and Midwestern states including Kansas in 1927.
- 1937: federal Marijuana Tax Act.
The 24-year gap between California’s 1913 prohibition and the federal Marijuana Tax Act of 1937 produced a patchwork of state prohibition statutes that — in most cases — remained in effect even after federal action. Kansas’s 1927 statute was already 10 years old by 1937 and continues to operate today.
The Hemp for Victory Heritage in 2026
The contemporary Kansas industrial hemp program (HB 2167 of 2019, codified at K.S.A. §§ 2-3901 et seq.) traces its genealogy to the 2018 federal Farm Bill, but the cultural memory of WWII Hemp for Victory persists in agricultural-industry advocacy. Prairie Band Ag — the most developed industrial-hemp processing operation in the region — operates from Prairie Band Potawatomi Nation tribal land and has produced compostable cutlery and straws under the brand "Mnokiwèn." See tribal page.
For in-depth cannabis education, dosing guides, safety information, and research summaries, visit our partner site TryCannabis.org
Related on this site: Bleeding Kansas Free-State Legacy, Kansas Temperance Heritage, Send a Message.