Acacias are fast becoming the next Australian pine and Brazilian pepper. Scientists plan to release insects and urge Floridians to chop them down.

On the fringe of the Nullarbor on Yalata land there are thousands of western myall acacia trees. Known to the Anangu as Kyatah, they are a traditional source of shelter and slow burning fuel.

"We are the first state or territory in Australia to implement a system with this capability," then-chief minister Adam Giles boasted of Acacia in 2016. But after nearly nine years and almost $300 ...