In November 2016 California voters passed Proposition 64, the Adult Use Marijuana Act (AUMA). Adult-use cannabis sales officially began January 1, 2018.
Residents of California are now able to possess up to 28.5 grams of marijuana flower and up to 8 grams of marijuana concentrates. Residents may also grow up to six marijuana plants per residence. Recreational dispensaries are open to any adult 21 years of age or older with a valid, government issued ID. The state was among the first to establish meaningful medical marijuana reform with the with the passing of Proposition 215 in 1996, and, subsequently, Senate Bill 420 in 2003. It is also among the few states that does not require a person to be a resident in order to be registered into the medical marijuana program.