Tennessee Williams was so dismayed by the film made from his play he threatened to have his name taken off the credits.
Natalie Wood attempted suicide during the filming of this movie (27 November 1965).
Natalie Wood had to perform a scene standing in a small stream of water. She was so afraid of dark water that costar Robert Blake had to dive under the water, hold his breath and steady her legs so she could perform the scene.
Natalie Wood had trouble performing the drunken bar scene, so she got drunk for real.
Grayson Hall was initially considered to play Natalie Wood's mother.