7 / 10
The Day of the Triffids is the British apocalypse film about ambulatory carnivorous plants invading a world that has been blinded by a comet. Steve Sekely directed most of the film, with Freddie Francis uncredited for the lighthouse subplot. John Wyndham wrote the 1951 source novel, one of the foundational works of British post-apocalyptic fiction. Howard Keel plays Bill Masen, a merchant marine officer whose eyes were bandaged during the meteor shower and who therefore retained his sight. Janette Scott plays Karen Goodwin, a marine biologist. Nicole Maurey plays Christine Durrant.
The film made approximately one million dollars worldwide on a six hundred thousand dollar budget. It is not the definitive adaptation of Wyndham’s novel. That distinction belongs to the 1981 BBC television miniseries, which is closer to the source material and has more time to develop the world. The 1962 film is more compressed, more action-oriented, and more focused on the immediate threat than the novel’s broader societal collapse.
The Triffids
The triffids are ambulatory plants approximately seven feet tall that can walk on root clusters and kill humans with a venomous whip-like stinger. The film design is reasonable for 1962. The creatures are practical puppets operated by stage technicians underneath the cloth coverings. The plants move slowly. They are dangerous primarily because the human population has been blinded.
The triffids’ origin is briefly explained as the result of Soviet biological experimentation in the novel, but the film leaves the origin vague. The creatures are simply present. The audience accepts them because the film treats them as accepted. The blindness epidemic is the larger crisis. The triffids are the threat that exploits the crisis. The structural decision to give the apocalypse two simultaneous causes (the blindness and the plants) makes the situation more desperate than either threat alone would have produced.
For Writers
Simultaneous catastrophes compound each other in ways single catastrophes cannot. The Day of the Triffids has a blindness pandemic and a carnivorous plant invasion at the same time. Either alone would be survivable. Together they are civilization-ending. The lesson is that the strongest apocalypse fiction often pairs multiple threats that compound rather than relying on a single overwhelming event. The interaction between threats produces situations no single threat could create.
The Lighthouse Subplot
The film’s secondary plotline involves a married couple of marine biologists, played by Janette Scott and Kieron Moore, who are trapped in a Cornish lighthouse with a growing infestation of triffids outside. The subplot was filmed separately under Freddie Francis’s direction after the main production. The studio felt the original cut needed additional material to reach feature length. The lighthouse sequences are some of the most claustrophobic in the film.
The eventual discovery that seawater kills the triffids is the lighthouse plot’s central revelation. The plants are vulnerable to a substance that is abundantly available on a planet that is mostly ocean. The plot then races to communicate this discovery to the wider world. The discovery is the film’s resolution. Humanity has been given a way to fight back. The film ends on this note of provisional hope.
For Writers
A solution that is hidden in plain sight is more satisfying than a deus ex machina rescue. The triffids are vulnerable to seawater, which has been everywhere in the film without being noticed by any character until the lighthouse couple stumbles on it. The reader does not have to be told. The reader can see, on reflection, that the answer has been present the whole time. The lesson is that solutions to fictional problems should be available to the careful reader if they look. Hidden in plain sight feels earned. Solutions invented in the third act feel imposed.
The Adaptation Question
The 1962 film cuts substantial material from Wyndham’s novel. The book is structurally about the collapse of British society after the catastrophe and the difficulty of rebuilding civilization on a small scale. The film is more focused on the immediate physical threat. Wyndham’s social commentary is largely absent. The film is structurally a creature feature with apocalypse trimmings.
The 1981 BBC miniseries is closer to the novel and is the version most British science fiction readers consider canonical. The 2009 BBC miniseries is closer to the spirit of the novel but updates the setting to contemporary Britain. The 1962 film stands as the most action-focused adaptation and the one that most influenced subsequent ambulatory-plant horror films, including parts of the The Happening (2008) and even some sequences in 28 Days Later (2002).
For Writers
An adaptation that cuts a novel’s social commentary in favor of its action elements is making a specific creative choice. The 1962 Day of the Triffids becomes a different work as a result. The lesson is that adaptation requires choosing which dimensions of the source to keep and which to discard. There is no single correct answer. The adaptation has to know what kind of film it wants to be and adapt accordingly. Trying to keep everything usually means keeping nothing well.
Craft Note
The plant-creature design is the film’s central craft achievement. Steve Sekely stages the triffids as ambulatory plants through specific puppet construction, slow-zoom photography, and sustained suggestion rather than full reveal. The technique demonstrates that creature horror works best when the audience does not see the threat fully until late in the film. The triffids are scariest before the camera commits to them.
The Verdict
7/10. A competent 1962 British science fiction film that does not equal John Wyndham’s novel but provides an action-focused take on the source. The triffid designs hold up. The lighthouse subplot is the strongest material. The 1981 BBC miniseries is the better adaptation. Watch this for the creature feature. Watch the BBC version for the full story.
FAQ
Is it faithful to the novel?
No. The film is a simplified creature feature compared to Wyndham’s broader societal-collapse novel.
What about the 1981 BBC version?
The 1981 BBC miniseries is the more faithful adaptation. It runs approximately three hours total and engages with the novel’s themes of post-apocalyptic society.
What about the 2009 version?
The 2009 BBC miniseries updates the setting to contemporary Britain. It is closer to the spirit of the novel than the 1962 film but takes liberties with the plot.
Are the triffids any good?
For 1962, yes. The practical puppets work better than CGI of the same era would have.
Why was the lighthouse subplot added?
The studio felt the original cut needed additional material to reach feature length. Freddie Francis directed the lighthouse sequences uncredited.
Who is John Wyndham?
English science fiction novelist. The Day of the Triffids (1951), The Kraken Wakes (1953), The Chrysalids (1955), The Midwich Cuckoos (1957). One of the foundational figures in mid-century British science fiction.
Should I watch this?
Yes, especially if you cannot find the BBC miniseries. The 1962 film is the most accessible adaptation.