University of Colorado opens campus for 4/20 pot celebrations after years of closures

DENVER — The University of Colorado in Boulder was open to the public on 4/20, the unofficial pot holiday, for the first time in four years on Monday.

The school had blocked public access to snuff out one of the nation's largest marijuana celebrations. The crackdown eased this year, and the campus remained open except for a gathering spot notorious for a huge crowd of weed smokers.

University spokesman Ryan Huff said police did not issue any citations for pot use on campus. He said interest in the gathering has dwindled because there is no longer a protest element after marijuana was legalized in the state.

Here are things to know about how the holiday and its history in Colorado:

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NORLIN QUAD

About 10,000 people gathered to smoke pot on Norlin Quad across from the university's main library in 2011. The following year, officials closed the campus to everyone except students with identification cards. They also sprayed stinky fish-based fertilizer on the grass to discourage another big turnout. Undeterred, about 300 students gathered on another campus field, counted down the seconds to 4:20 p.m. and lit up. Hundreds of others watched the defiant smoke-out. While the campus was open Monday, Norlin Quad was roped off, and police warned they could ticket or arrest anyone who trespassed.

BUSINESS AS NORMAL

In previous years, some teachers cancelled classes on April 20, anticipating students being absent in one way or another. With things back to normal, some students say they're too busy with school work to celebrate Monday. Junior Connor Dunn said he had two exams Tuesday so wouldn't be joining any smoke-outs. His friend, Winston Heuga, also said he would be busy with homework. He spoke wistfully of the big celebrations he heard about before he arrived on campus, but he said there doesn't seem to be any interest in reviving them among his fellow students, most of whom arrived on campus after the crackdown.

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DENVER