Marks the return of Lillian Gish to MGM after a 22-year absence. The Cobweb was Lauren Bacall first film for MGM.
The movie Stevie and Sue go to see is Seven Brides for Seven Brothers (1954). Music from the movie can be heard as they are exiting the theater.
This film was a disaster at the box office, resulting in a loss for MGM of $1,141,000 ($12.6M in 2022) according to studio records.
The Cobweb marked Oscar Levant's last screen appearance. Minnelli wrote in his memoir that he suggested that the role of "Mr. Capp" be tailored to Levant's well-publicized psychological problems: "He would more or less be playing himself."