In November, Maryland became the 20th state to legalize adult-use recreational cannabis. Maryland follows states such as Colorado and Washington, which each legalized in 2012. Medical cannabis became available in Maryland in 2017. “The world of legalized cannabis, it changes daily, and comparing it to what it was in 2014 or 2012, it’s a different world,” said Justin Tepe, a lawyer at Baltimore law firm Goodell DeVries who works with cannabis companies.