Along with her visual art, Colquhoun was a prolific writer, producing works including poetry, essays, novels, and travel guides. From the 1950s, Colquhoun's output as a visual artist decreased, and she increasingly focused on her poetry and essay writing. Colquhoun published her first article, "The Prose of Alchemy", in 1930. In 1939, she published several pieces of short fiction in the
London Bulletin, along with an essay, "What Do I Need to Paint a Picture?". In the 1940s she continued to publish short works in anthologies such as
New Road: New Directions in Art and Writing and
The Fortune Anthology, and organised surrealist poetry readings with del Renzio. During this period, her writing was influenced by the
New Apocalypse literary movement, as well as the
Mass Observation project. She wrote articles on automatism: "The Mantic Stain" – which she claimed was the first English-language essay on surrealist automatism – in 1949, "Children of the Mantic Stain" in 1951, and "Notes on Automatism" in 1980. Later in life she contributed articles to surrealist revival journals. Colquhoun wrote three travel books:
The Crying of the Wind and
Living Stones, about Ireland and Cornwall respectively, were published in the 1950s; a third book on Egypt, begun in the 1960s, was never published. In 1975 she published
The Sword of Wisdom, a biography of the British occultist
Samuel MacGregor Mathers. She published a novel,
The Goose of Hermogenes, which was largely written by automatic processes. The novel tells the story of a girl lured to an island by her uncle to help him in his search for the
Philosopher's Stone. Colquhoun wrote two more surrealist gothic novels,
I Saw Water and
Destination Limbo, neither of which was published in her lifetime;
I Saw Water was published in 2014 and
Destination Limbo in 2021. She also published two volumes of poetry during her lifetime.
Grimoire of the Entangled Thicket was a short poetry book inspired by the
Tree of Life in 1973, and
Osmazone, published in 1983, was an anthology of prose poems, many from much earlier in her life. ==Reception and legacy==