Kristy Wallace ( born Kristy Marlana Wallace February 20 , 1953 , San Bernardino , California ) , became famous using the stage name of Poison Ivy ( sometimes Poison Ivy Rorschach ) , as a founding member of the American punk band The Cramps . Kristy Wallace ( born Kristy Marlana Wallace February 20 , 1953 , San Bernardino , California ) , became famous using the stage name of Poison Ivy ( sometimes Poison Ivy Rorschach ) , as a founding member of the American garage punk band The Cramps .