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Cannabis in Wisconsin is illegal for recreational use. Possession of any amount is punishable by up to 6 months in prison and a $1000 fine for a first offense. A second offense is punished as a felony with up to 3.5 years in prison and up to a $10,000 fine. At the local level, however, numerous municipalities and counties have decriminalized cannabis or lessened penalties for minor possession offenses. Medical use is legal only in the form of low-THC cannabis oil (CBD oil).
Wisconsin was the nation's leading hemp producer during the 1940s and home to the nation's last hemp-producing company (Rens Hemp Company) prior to federal prohibition. A 2017 law reauthorized hemp cultivation in the state.