Mercy Lewis, a character in the film, is also the name of a character in Arthur Miller's The Crucible, a play about a witch hunt.
Pitt Herbert, Ross Elliot, Virginia Gregg, June Dayton, Patricia Barry, Milton Selzer, Cyril Delevanti, John Carradine and Lloyd Bochner have all acted in episodes of the TV series The Twilight Zone. That's nine out of a listed cast of 16! In addition, Walter Grauman, the director of Crowhaven Farm, directed one episode of The Twilight Zone ("Miniature") and Robert Drasnin, the composer of Crowhaven Farm, composed the music for four episodes of The Twilight Zone.
The car that hits the tree and burns at the beginning of the film is a 1960 Chrysler Saratoga.
Banned by the apartheid censor board even though South Africa did not have a television service at the time of the film's first transmission.