Trevor,
E. camaldulensis was introduced to this region at the begining of last century.
Main perpuse was to dry damp areas [swamps] in order to combat Malaria, but then it was planted in all British millitary camps in order to give shade as fast as possible.
Later on it was used also for wood, to stop erosion in more arid areas as it resulted also to be quite a droght tolerant and in order to creat shady, resting areas by the roads. The high vantage is that this species does not seeds it self here, there for not invasive.
Infact in areas where it is growing by water it grows to a gigentic tree.
In recent years E. torquata and few other drought tolerent species and hybrids took its place in the arid areas, they proved to be much better, have lovely flowers and are used even for the Bees in order to produce Eucalyptus flavored honey.
