Bunya

Six hundred and eight hundred year old Bunya trees are dying in the Bunya Mountains. The blame is put on a water mould soil-borne disease.
Previously myrtle rust became widespread along the east coast of Australia. Many different plants are susceptible including eucalyptus and melaleuca. It was very sad some years ago to see so many dead xanthorrhoea walking around Wineglass Bay in Tasmania.

This is why bushwalkers scrub their boots after walking through native forests.