Adam Brook of Detroit, who is acting as emcee for the event for the 19th time, said medical marijuana will be a hot topic at the cannabis smoking event Saturday, The Ann Arbor News reported Friday.
"The Hash Bash started as a smoke-in, and really is a smoke-in," Brook said. "However, speakers take on current political (questions) of the day. This year, it's medical marijuana."
"I expect to see a lot of patients who'll come out to see what they can learn about this new law," he said.
The medical marijuana law was passed in November with 63 percent of the vote. Michigan Department of Community Health offices are expected to begin accepting applications for medical cannabis state ID cards under the law on Monday.
He said the Hash Bash, which includes a march on the Federal Building in Ann Arbor before the marijuana smoking and live music, is expected to attract thousands of people.
"This is largest event in the country not supported by its local chamber of commerce," he said. "My whole year is based on the first Saturday in April."