The effort was led by the group Decriminalize Nature Oakland.
Possession of psilocybin mushrooms is decriminalized in Austria.
Washington Initiative 502 legalized marijuana use by adults age 21 and over.
US Drug Enforcement Administration Puts 5-MeO-DMT on Schedule I.
Possession of up to 40 psilocybin mushrooms is decriminalized in the Czech Republic.
The Netherlands prohibits the possession of over 5.0 g of fresh or 0.5 g of dry psychoactive mushrooms.
New section added to the penal code in Finland prohibits growing or attempting to grow Psilocybe mushrooms.
Ireland makes unprepared psilocybin mushrooms illegal.
The new UK Drugs Act 2005 goes into effect, banning fresh psilocybin mushrooms.
Japanese government makes it illegal to use, produce, traffic, grow, and/or possess psilocybin mushrooms.
Possession and sale of unprepared psilocybin mushrooms become legal in the UK
Portugal's drug policy decriminalizes the possession of all drugs providing the amount possessed is no more than a 10-day supply.
Danish Ministry of Health makes growing, collecting, possession, sale, and processing of psilocybin mushrooms illegal.
Germany expands the scope of Executive Order 698 of 1993 to include more aspects of psilocybin mushrooms including seeds, spores, and cell cultures.
Royal Decree in Belgium prohibits the possession and sale of hallucinogenic mushrooms.
Sweden adds Psilocybe semilanceata to their schedule I drug list as a narcotic.
Canada enacts the Controlled Drugs and Substances Act which places psilocybin and psilocin on their schedule III drug list.
Germany enacts Executive Order 698 prohibiting the cultivation of psilocybin mushrooms.
US Drug Enforcement Agency places MDMA on Schedule I.
Mexican law prohibits psilocin and psilocybin.
United Nations Convention on Psychotropic Substances lists psilocybin as a Schedule I drug.
The UK enacts the Misuse of Drugs Act 1971, categorizing psilocybin as a Class A drug.
The Comprehensive Drug Abuse Prevention and Control Act is passed by the US Congress and psilocybin, LSD, and other hallucinogens are placed on Schedule I.
Staggers-Dodd bill is passed, banning the possession of psilocybin and psilocin in the US.
France lists psilocybin mushrooms as a narcotic.
California outlaws LSD.
Belgium prohibits the cultivation of hallucinogenic mushrooms.