The Little Shop of Horrors recalled "at first they told me it was a detective movie; then, while I was flying back [to make the movie], I think they wrote a whole new movie, more in the horror genre. I think over a weekend they rewrote it." The screenplay was written under the title "The Passionate People Eater". Welles stated, "The reason that "The Little Shop of Horrors" worked is because it was a love project. It was "our" love project." The film was partially cast with stock actors that Corman had used in previous films. Writer Charles B. Griffith portrays several small roles. Griffith's
The Little Shop of Horrors animated television series, "Little Shop", inspired by the musical film, premiered in 1991. It ran for one season on Fox Kids in 1991. Seymour and Audrey were depicted as 13-year-olds, and the plant, "Junior", was a rapping carnivorous prehistoric creature that sprouted from a fossilized seed. Each episode featured a few stylish music video sequences; Corman served as a creative consultant on the show. The film was colorized twice, the first time being in 1987. This version was poorly received. The film was colorized again by Legend Films, who released their colorized version as well as a restored black-and-white version