She authored a number of books, compiled a weekly newspaper column, and gave talks on the radio about Australian wildflowers.
Her parents were naturalists and inspired Estelle's interest through family holidays to the Scottish Highlands and the Lake District.
[2][3] In 1919, after her husband was released from his military service, the couple came to Australia where they established a farm, Wombo, at Eight Mile Plains in Queensland, where they raised chickens and crops until the venture failed in 1923.
During this period, Thomson developed an appreciation of Australian wildflowers, resulting in her becoming an active member of the Queensland Naturalists' Club from the 1920s.
[8] The State Library of Queensland has digitised Estelle Thomson's lantern slides which she used to illustrate her talks.