43nd Annual Ann Arbor Hash Bash Held on the first Saturday of every April at high noon, the Ann Arbor Hash Bash is one of Michigan’s most famous cannabis events. The very first Hash Bash started in 1972 as a protest against an Published 10 years ago on March 14, 2014 By ireadculture Related Topics: Continue Reading You may like Click to comment Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.