Despite their being a touted solution for resolving problems of land degradation, eucalypts are often indicted as an environmental problem in its own right through their demand for scarce water resources and its potential to become an environmental weed. Globally, the eucalypt plantation industry has benefited from a relative absence of pest and disease outbreaks outside the home range of the various commercial species. However, this status cannot be guaranteed, and there is inevitably a very real potential for a major outbreak in the largely monoculture environment of commercial eucalypt forestry