What is Dieback? 

Preferred Environment

Strictly speaking, Phytophthora dieback is a water mould and not a fungus. As the name water mould suggests, it requires moist conditions to thrive. As a consequence the disease is often associated with creek lines, drainage areas or sites that are regularly flooded.

Disease Triangle

The disease triangle is a concept that is used to describe the circumstances under which pathogens will cause disease. Expression of any disease requires an interaction between the pathogen, host and environment. The absence of any one of these factors means that the disease cannot exist at