Michigan marijuana producer and retailer opens St. Louis production facility

C3 Industries, a multistate cannabis company based in Ann Arbor, Michigan, said Wednesday it plans to start operating a new manufacturing plant in south St. Louis this month.

C3's new production facility is at 1630 Macklind Ave. in The Hill neighborhood, a former branch of New York-based General Insulation Co., a wholesale insulation distributor. The building is owned by H&F Properties, an entity organized by Robert Flynn III of Clayton, according to city and state records.