The United States is gradually becoming the land of the red, white, and green.
Nine states and Washington, DC, have legalized marijuana for recreational use for adults over the age of 21. Medical marijuana is legal in another 30 states after voters in Oklahoma approved a ballot initiative to legalize medical marijuana in June.
Support for the drug reached new highs in 2018. A Gallup poll showed that 64% of Americans favor legalization, and even a majority of Republicans back it.
Legal marijuana sales exploded to $9.7 billion in North America in 2017, according to a report from Arcview Market Research and BDS Analytics. That represents a 33% increase over 2016, shattering previous expectations about how quickly the marijuana industry could grow in the face of federal prohibition. By 2022, Arcview expects global spending on legal cannabis to hit $32 billion by 2022, representing a 22% growth rate over the four-year period.
Here's a summary of where Americans can legally light up — no doctor's letter required — in 2018.
Adults 21 and over can light up in Alaska. In early 2015, the northernmost US state made it legal for residents to use, possess, and transport up to an ounce of marijuana — roughly a sandwich bag full — for recreational use. The first pot shop opened for business in late 2016.
Alaska has pounced on the opportunity to make its recreational pot shops a destination for tourists. More than two million people visit Alaska annually and spend $2 billion.
It was the first state to legalize medical marijuana back in 1996. California became even more pot-friendly in 2016 when it made it legal to use and carry up to an ounce of marijuana.
The law also permits adults 21 and over to buy up to eight grams of marijuana concentrates, which are found in edibles, and grow no more than six marijuana plants per household.
But not all Californians can legally smoke marijuana, depending on where they live. Many cities in the Central Valley, including Fresno and Bakersfield, have moved to ban recreational sales.