Little Shop of Horrors (film) would pantomime and lip sync in slow motion. The film was then sped up to the normal 24 frames per second and voices were reinserted in post-production. Levi Stubbs' recordings were run through a harmonizer when slowed down so that they were coherent for Moranis or Ellen Greene. There are no blue screens or opticals involved in any of Audrey II's scenes, with the exception of the reshot ending where the plant is electrocuted, designed by Visual Effects supervisor Bran Ferren, and in some shots during the rampage in the original ending. The plant was made in six different stages
The Little Shop of Horrors with us, and the three of us worked out the rest of the story together. The first screenplay Griffith wrote was "Cardula", a Dracula-themed story involving a vampire music critic. After Corman rejected the idea, Griffith says he wrote a screenplay titled "Gluttony", in which the protagonist was "a salad chef in a restaurant who would wind up cooking customers and stuff like that, you know? We couldn't do that though because of the code at the time. So I said, "How about a man-eating plant?", and Roger said, "Okay." By that time, we were both drunk." Jackie Joseph later