The Little Shop of Horrors was interested because of "A Bucket of Blood" and said the development process was similar to that of the earlier film, when he and Griffith were inspired by visiting various coffee houses: We tried a similar approach for "The Little Shop of Horrors", dropping in and out of various downtown dives. We ended up at a place where Sally Kellerman (before she became a star) was working as a waitress, and as Chuck and I vied with each other, trying to top each other's sardonic or subversive ideas, appealing to Sally as a referee, she sat down at the table
The Little Shop of Horrors has been denied by Mel Welles. According to Joseph, Corman shot the film quickly in order to beat changing industry rules that would have prevented producers from "buying out" an actor's performance in perpetuity. On January 1, 1960, new rules were to go into effect requiring producers to pay all actors residuals for all future releases of their work. This meant that Corman's B-movie business model would be permanently changed and he would not be able to produce low-budget movies in the same way. Before these rules went into effect, Corman decided to shoot one last film and scheduled it