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 to happen the last week in December 1959. Interiors were shot with three cameras in wide, lingering master shots in single takes. Welles states that Corman "had two camera crews on the set—that's why the picture, from a cinematic standpoint, is really not very well done. The two camera crews were pointed in opposite directions so that we got both angles, and then other shots were 'picked up' to use in between, to make it flow. It was a pretty fixed set and it was done sort of like a sitcom is done today, so it wasn't very difficult." At