Right before shooting was set to begin, Pat Hingle suffered devastating injuries when he accidentally fell 54 feet down an elevator shaft in his apartment building. It would take Hingle over a year to fully recover from the accident. In the meantime, however, he decided to go ahead and do the film - he would simply incorporate his limp into the character. "I broke everything," Hingle said later. "I landed upright, so I broke hips and knees and ankles and ribs, and that sort of thing. That lurching walk that Ace Stamper has - that was as good as I could walk."

Even though they were supposed to be playing teenagers, Natalie Wood and Warren Beatty were approximately 22 and 23, respectively at the time of filming. As a result, Elia Kazan decided that the other actors who were to play teenagers in the film should be in their early to mid-twenties as a way to make it easier for the audience to accept Wood and Beatty as teenagers rather than as adults playing teens.

Elia Kazan did whatever was necessary in order to bring out the best possible performances by his actors - it was one of the reasons he was known as one of the best directors in the business. From the beginning, he wanted to strip away the Hollywood glamour from Natalie Wood and get her to a more natural state for the camera, which was appropriate for the character of Deanie. It meant that Wood had to do without the sophisticated makeup and costumes she was used to, which caused her some anxiety. According her friend Mart Crowley, she was always trying to sneak on a little extra rouge or lipstick when Kazan wasn't looking.

As originally filmed, in the sequence in which Wilma Dean Loomis takes a bath while arguing with her mother, the bickering becomes so intense that Wilma jumps out of the tub and runs nude down a hallway to her bedroom, where the camera cuts to a closeup of her bare legs kicking hysterically on the mattress. Both the Hollywood censors and the Catholic Legion Of Decency objected to the hallway scene, finding the bare backside unsuitable for public display. Consequently, director Elia Kazan dropped the piece, leaving an abrupt jump from tub to bed. Later, in an early 1970s TV interview with Mike Douglas, Natalie Wood claimed that the European cut of the film she eventually saw in France left in the partial nudity scene in the hallway. Interestingly enough, Wood herself appeared (ostensibly) nude, though wrapped in a bedsheet, after spending the night with Robert Redford in This Property Is Condemned (1966). The production code clearly was on the way out by then, just five years later.

The nightclub owner played by Phyllis Diller is Texas Guinan, a who owned the "300 Club", a New York nightclub in the 1920s. "Hello, suckers!" was her standard nightly greeting to her nightclub patrons.

In the bath scene, Natalie Wood's wrist is very briefly revealed. She normally always wore a bulky bracelet or long sleeves to hide the protrusion of a bone in her wrist which she thought to be an ugly anomaly.

Film debuts of Warren Beatty, Sandy Dennis, Phyllis Diller, Marla Adams and Eugene Roche.

According to one of the makeup artists, the crew found Warren Beatty arrogant and didn't like him. In fact, he was given the nickname "Mental Anguish" or "M.A." for short that crew members called him behind his back.

Natalie Wood's sister Lana Wood had an on-again, off-again relationship with Warren Beatty for several years after he and Natalie had broken up. In December 1981, a few days after Natalie's funeral (which Beatty did not attend), Lana met with him to discuss a project. She recalled that "Natalie was not mentioned until I was about to leave, and then I couldn't help it. I wanted him to say something about her, to say how he would remember her." Lana asked Beatty if he missed Natalie, to which he replied, "No, not really. She's gone, and I'm sorry, but that's it. The truth is that I talked to you and know you better." Then "he reached out and pulled me to him. Warren simply could not let the opportunity get by. This time I could, though." Angered by his lack of sensitivity, she said her last goodbye and ran out the door.

The film's title comes from the poem "Ode: Intimations of Immortality" by William Wordsworth: "Though nothing can bring back the hour of splendour in the grass / of glory in the flower / we will grieve not / rather find strength in what remains behind."

Film neophyte Warren Beatty looked at Elia Kazan as a teacher and sought to learn as much as possible from him. Kazan taught him how to think about acting, where to put the camera, how to break down a script - all valuable lessons for Beatty, who later went on to direct and produce himself.

Although Elia Kazan had planned to film the movie in Kansas, a severe drought forced him to relocate all shooting to New York state. The waterfall in the film is located in High Falls, New York, in the Catskills.

Pat Hingle, who plays Warren Beatty's father, was only 13 years older than Beatty.

Jane Fonda wrote in her autobiography that she tested for the role of Deanie. When Elia Kazan asked her if she was ambitious, she said no (even though she was) because "good girls aren't supposed to be ambitious". Fonda believes this was the reason for her not getting the role.

Elia Kazan and Barbara Loden were a couple during filming. They had begun their affair several years earlier and had to keep it under wraps since Kazan was married to someone else at the time.

To get Natalie Wood in the right frame of mind for the bathtub scene before they shot, Elia Kazan told Audrey Christie, who played her mom, to ask Wood a question that her real-life mother Maria Gurdin would ask her that would set her off.

The title character in Judy Blume's coming-of-age novel, Deenie, was named for Natalie Wood's character in this film. The novel contains several references to the film.

Elia Kazan wasn't enamoured with Warren Beatty, though he couldn't deny that he was very talented. "Warren was a little 'snotty' - I don't know a better word for how he behaved and can't find one in my thesaurus," said Kazan in his 1988 autobiography A Life, "but he was able to grow into a formidable man."

Shot entirely in New York, exteriors were filmed in Staten Island and upstate New York, which doubled as Kansas in the 1920s. Interiors were filmed at Filmways Studios in East Harlem.

Dennis Hopper was considered for the role of Bud Stamper.

The brief glimpse of a building in Yale is actually CCNY (City College of New York).

"Glory in the Flower", William Inge's one-act play upon which Splendor in the Grass (1961) is based, was telecast on Omnibus: Glory in the Flower (1953), with a cast of Hume Cronyn, Jessica Tandy, and James Dean.

It is revealed that Bud's real name is Arthur.

While a clip was not actually seen (though dialog is heard), there is a scene in Pedro Almodóvar's What Have I Done to Deserve This? (1984) in which the grandmother and her eldest grandson attend a showing of Splendor in the Grass (1961). As they leave the theater, the poster (Spanish) is clearly seen in the background.

The film takes place from 1928 to 1931.

Included among the American Film Institute's 1998 list of the 400 movies nominated for the Top 100 Greatest American Movies.

Incredibly, by today's standards, a Cedar Rapids, Iowa (USA) newspaper ad for this film says "No one under 16 will be admitted unless accompanied by an adult".

Included among the "1001 Movies You Must See Before You Die", edited by Steven Schneider.

At the Stamper breakfast table, Ginny Stamper addresses the maid as "Phoebe". This is the name of the actress, Phoebe Mackay. Evidently, the character is listed in the script simply as "Maid", so Barbara Loden just used her real name.

The exterior used for Yale is actually The City of New York's Shepard Hall located in Harlem, New York.

In the original Warner Brothers movie trailer for this motion picture, the narrator introduces newcomer Warren Beatty by pronouncing his surname as BEE-TEE as opposed to the familiar BAY-TEE.

Before he achieved success on Broadway, William Inge wrote a one-act play, "Glory in the Flower". It was the inspiration for this movie.

Diane Varsi and Lee Remick were considered for the part of Deanie.

Favorite film of Reese Witherspoon.

Jody McCrea and Troy Donahue were considered for the part of Bud.

Favourite film of Lesley Ann Warren.

Included among the American Film Institute's 2002 list of the Top 100 America's Greatest Love Story Movies.

Andrew Duggan narrated the theatrical trailer.

There are visuals suggesting sexual desire in the opening scenes, including rushing water to show passion, and a sexually suggestive shell that Natalie Wood picks up.

Despite being best known for agriculture, Kansas is also an oil producing state, as shown in this film.

Contrary to rumor, Natalie Wood and Warren Beatty did not get along during production. Wood found Beatty to be unprofessional and immature, and secretly referred to him as "Mental Anguish". By the end of filming, she recognized his talent as an actor but still found him problematic. It wasn't until after she had separated from Robert Wagner that she became romantically involved with Beatty, which only lasted a few years, but the two remained friends until Wood's death.

For the scene in which Deanie tries to drown herself in the lake, Natalie Wood asked Elia Kazan if she could do it in a controlled studio tank because she had a great fear of water - particularly dark water. "I assured her it was a very shallow lake and that her feet would always be close to the bottom," said Kazan. "She said that even if her feet were on the bottom, she'd be in a panic of fear about it. So I asked my assistant, Charlie Maguire, to get into the water with her, just out of camera range, while she played the scene of struggling to save herself. This didn't entirely reassure her, but she did the scene and did it well - then clutched Charlie. 'Cut!' I cried. On dry land she continued to shake with fear, then laughed hysterically, with relief."

Depicts the first French kiss in a Hollywood film. It occurs between Warren Beatty (Bud) and Jan Norris (Juanita) during the waterfall scene.

There are two scenes that worried Natalie Wood due to their intensity: 1) when she has a confrontation with her mother while she is in the bathtub and 2) when she tries to drown herself in a lake after Bud rejects her sexual advances. Each time, Elia Kazan found a way to bring out her best, even if his methods left her angry. "The bathtub scene, in which I was to be hysterical," said Wood in a later interview, "always frightened me. And I told Kazan I was very worried about it. His response absolutely threw me for a loop, because he said, 'What you do, I'll let you see the film, and we'll go back and do it again. Or we can play it on Audrey's [Christie] reactions.' And I was so enraged and offended that I became hysterical. That was his way of dealing with me, and it was obviously the correct way, because we only shot it once."

Natalie Wood's character tries to drown herself. 21 years later, Wood drowned after falling off a boat.