In Illinois’ growing marijuana industry, 4/20 is a way to get pot brands front and center with a new set of potential consumers, while educating people on local laws and products.

A street festival unlike any other will be held in Chicago’s Uptown neighborhood this weekend: a daylong celebration of weed.

Saturday is April 20, or 4/20, a day that has evolved into a nationwide celebration of marijuana. In the cannabis community, the term 420 is a slang reference to smoking weed.

The term reportedly dates back to the 1970s, when a group of Northern California high schoolers began meeting after classes at 4:20 p.m. to light up. 

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Ally Marotti ~ ChicagoTribune.com ~