SAN FRANCISCO (KRON) — Thousands of people are expected to attend the annual 4/20 celebration at San Francisco’s Golden Gate Park Thursday to smoke pot.

There has been plenty of pot puffed, blunts rolled and joints toked on Hippie Hill on what’s considered for many to be the high holy day of all things cannabis.

Fans of the drug have long marked April 20 as a day to roll weed or munch on pot-laced brownies — especially at 4:20 p.m.

At 11:30 a.m., there were already around 850 people that showed up to Hippie Hill to ‘wake and bake.’

By 4 p.m., the crowd was estimated at 15,000.

San Francisco city officials are trying to organize and control this year’s official event in the park.

For the first time, a group of merchants with experience in staging events including the Haight Street Fair have come together to provide services for the event.

The new event management will also be enforcing some rules for the event.

New rules for San Francisco’s 4/20 marijuana festival

Those attending will be going through security at the gate, and are asked to avoid bringing glass, barbecues and cooking equipment, amplified sound equipment, generators or tents, tables and other structures. No marijuana or alcohol will be sold inside the fence.

Most importantly, people are being told to not bring their children because this year’s event is strictly 18 and up, city officials said.

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