In 1983–84, a fungus known as *Phragmidium violaceum* was introduced in Australia in secret and illegally, with the stated goal of killing blackberry plants. The releases happened during the summer of that period and were part of an effort to use biological control against a long-standing weed.
More than 40 years later, the incident is revisited as outlets examine how and why such an intervention occurred. One account highlights the deliberate nature of the introduction and frames it as a hidden chapter in Australia’s decadeslong battle with blackberry. Another focuses on the “mystery” of who carried out the action and why, given that releasing biological control agents typically involves legal approvals and oversight.
Together, the reporting places the fungal release within a broader context: blackberries have posed persistent problems for agriculture and recreation in Australia, and the episode is now viewed through questions of responsibility, governance, and the tangled history of weed-control measures. Both sources converge on the core facts of the fungus, the timing, and the illegal, deliberate intent behind the introduction.
