Breakthrough Hit: The success of this helped establish Katt Shea as a director.
Creator Backlash: Katt Shea doesn't like the sequels, calling them "exploitative," and says her first film was supposed to be a standalone story.
Dawson Casting: Averted for Drew Barrymore and Sara Gilbert, who were the same age as Ivy and Sylvie respectively.
Executive Meddling: Ivy lived at the end of the original script. They even filmed an ending scene of Ivy leaving the Coopers' house and hitchhiking. The studio however insisted that Ivy had to die.
Throw It In!: Sara Gilbert ad-libbed the final line of the film. The crew thought it was stupid, but Katt Shea defended her and said that it's what Sylvie would have felt.
Vindicated by Cable: The film flopped at the Box Office but generated strong enough word of mouth to enjoy success when it was aired on TV.
Drew Barrymore actually missed her first audition. Katt Shea really wanted her for the part, and arranged a second audition, which Drew also no-showed. Her agent then informed the director that she was no longer interested. Katt Shea pushed for her to audition one more time, and Drew did so in her home, not realising she basically had the role already.
Despite Ivy dying at the end, Katt Shea recalls being asked to resurrect her for the sake of sequels. She refused at the time but came to regret that decision.
Working Title: The film's working titles were Fast Lane, Ivy and Our House, but Katt Shea thought of 'Poison Ivy' during filming. At first she thought it sounded too ridiculous, but the crew told her it was a good title.
Write What You Know: Producer Melissa Goddard claims that the film is partially inspired by an experience she had while she was younger; a friend stayed over for a sleepover and tried to seduce her father.