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As noted in many reviews, the book on which the film was based was a recollection by author Jean Kerr of her life with her husband, Walter Kerr, noted New York Herald Tribune [NYHT] drama critic and Pulitzer Prize winning dramatist and playwright. Kerr co-wrote several successful plays with her husband including King of Hearts and The Song of Bernadette. She was also well-known for her comedic plays Finishing Touches and the hit Mary, Mary, among others.
The real newspaper for which Walter Kerr's alter ego, "Lawrence Mackay," was the drama critic, was not specified in the film, but the New York Herald Tribune review, perhaps tongue-in-check, criticized the film's portrait of a New York newspaper drama critic as unrealistic and its exaggeration of the influence the film attributed to the job. The reviewer further warned readers not to draw any conclusions about real critics and their wives from the film. A January 15, 1958 Variety article stated that in the contract with M-G-M, Kerr insisted that the studio refrain from using the names of the author, her husband, their four children or her husband's newspaper.
According to Hollywood Reporter news items, Jane Betts, Helen Wallace and Jack Chefe were added to the cast; however, their appearance in the final film has not been confirmed. Although onscreen credit is given to a "Baby Gellert," a July 31, 1959 Hollywood Reporter news item also adds that both Larry and Rickey Gellert were cast. It is unknown which or if both actors portrayed toddler "Adam McKay" in the film. The song "Whatever Will Be, Will Be (Que Sera, Sera)," which became Doris Day's signature song after she sang it in The Man Who Knew Too Much, can be heard briefly in Please Don't Eat the Daisies.
Please Don't Eat the Daisies marked the final film appearance of the long-time character actress Spring Byington (1893-1971). A television series based on the film starring Patricia Crowley was broadcast on the NBC network from September 1965-April 1967.