WI Cannabis Official Sources — DHS, DATCP, DOJ, DOR, DOT

For authoritative information on Wisconsin cannabis law and policy, consult the regulatory bodies directly. The Wisconsin Department of Health Services (DHS) tracks Lydia’s Law CBD certifications. The Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) oversees hemp consumer products. The Wisconsin Department of Justice (DOJ) under AG Josh Kaul handles enforcement. The Wisconsin Statutes ch. 961 and ch. 346 contain the statutory framework.

Legal Disclaimer: This information reflects Wisconsin cannabis law as of May 2026 and is for educational purposes only. It is not legal advice. Laws and regulations change — always verify current rules with the Wisconsin Department of Health Services (DHS) for Lydia's Law CBD; Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) for hemp or a qualified attorney. Cannabis remains illegal under federal law.

Last verified: May 2026

WI State Agencies

Wisconsin Department of Health Services (DHS)

Website: dhs.wisconsin.gov
Function: Lydia’s Law CBD certification tracking.

Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP)

Website: datcp.wi.gov
Function: Hemp consumer-product oversight (testing, labeling).
Director, Bureau of Plant Industry: Brian Kuhn.

Wisconsin Department of Justice (DOJ)

Website: doj.state.wi.us
Attorney General: Josh Kaul (D, pro-cannabis, running for re-election 2026).
Function: Law-enforcement guidance and felony prosecution.

Wisconsin Department of Revenue (DOR)

Cannabis tax administration under any future legalization.

Wisconsin Department of Transportation (DOT)

OWI penalty chart, license revocation, ignition interlock device.

Wisconsin Statutes — Statutory Sources

Wis. Stat. ch. 961 — Uniform Controlled Substances Act.
§ 961.14(4)(t) — Cannabis (THC) as Schedule I controlled substance.
§ 961.41(3g)(e) — Possession penalties (felony cliff).
§ 961.41(1) and § 961.41(1m) — Manufacture, distribution, cultivation.
§ 961.32(2m)(b) — Lydia’s Law CBD-only affirmative defense.
§ 961.495 — School-zone, park, jail, treatment-facility, housing-project enhancement.
§ 961.50 — License suspension up to 5 years for any drug conviction.
§ 961.573 / § 961.574 — Paraphernalia.
§ 346.63(1)(am) — OWI per se zero tolerance.
§ 346.63(1)(b) — Prohibited Alcohol Concentration (PAC) limit.
§ 346.65 — OWI penalty schedule.
§ 343.305 — Implied consent.
§ 66.0107(1)(bm) — Municipal civil-forfeiture authority.

Foundational Cases

State v. Luedtke, 2015 WI 42 — OWI per se zero-tolerance strict liability confirmed.
State v. Moore, 2023 WI 50 — Cannabis odor as probable cause for vehicle search after federal hemp legalization.

Federal Sources

Drug Enforcement Administration (DEA): dea.gov
U.S. Attorney for the Eastern District of Wisconsin.
U.S. Attorney for the Western District of Wisconsin.
USDA Domestic Hemp Production Program: ams.usda.gov/rules-regulations/hemp
Federal Schedule III rescheduling final rule: Federal Register published April 28, 2026 (document 2026-08176).

Cross-Border Resources

Illinois IDFPR (CRTA): Cannabis Regulation and Tax Act administration.
Michigan Cannabis Regulatory Agency (CRA): Adult-use program (since Dec 2019).
Minnesota Office of Cannabis Management (OCM): Adult-use retail launched Sept 16, 2025.
Iowa: Medical CBD only.

Legal Help

State Public Defender’s Office for indigent defense statewide.
Wisconsin State Bar Lawyer Referral Service: 1-800-362-9082.