SAN FRANCISCO - APRIL 20: A marijuana user smokes from a bong during a 420 Day celebration on "Hippie Hill" in Golden Gate Park April 20, 2010 in San Francisco, California. April 20th has become a de facto holiday for marijuana advocates, with large gatherings and 'smoke outs' in many parts of the United States. Voters in California will consider a measure on the November general election ballot that could make the State the first in the nation to legalize the growing of a limited amount of marijuana for private use. (Photo by Justin Sullivan/Getty Images)
The International Cannabis and Hemp Expo had such great success in April that it's making a return trip, complete with an area for card-carrying medical pot patients to, well, medicate.
The event is a chance for the public to learn from vendors and speakers and see 100,000-square feet of displays showing off products to grow and ingest marijuana. Bands and musical acts will entertain. One of the goals of this weekend's expo is to showcase the job industry the cannabis field has opened. Legal experts will also on hand to help explain the rules of the "canna-business" and guide people interested in getting into the industry.
Marijuana won't be sold at the event but there will be a "Prop 215 tent" designated for legally-certified medical cannabis patients to consume their own.
An estimated 15,000 people attended the event in April -- about half of them were medical marijuana patients. This weekend's expo could draw an even bigger crowd.