The Tree of Knowledge was a heritage-listed tree in Oak Street, Barcaldine, Barcaldine Region, Queensland, Australia, that was poisoned and killed in 2006. It was a 200-year-old Corymbia aparrerinja ghost gum. It was added to the Queensland Heritage Register on 21 October 1992.
Location: Oak Street, Barcaldine, Barcaldine Region, Queensland, Australia