Myrtle rust was first detected in Queensland in December 2010. It is a serious fungal disease and part of the eucalyptus/guava rust complex. This group of pathogens affects plants belonging to the Myrtaceae family including Australian natives like bottle brush (Callistemon spp.), tea tree (Melaleuca spp.) and eucalypts (Eucalyptus spp.). Under Queensland legislation authorities must be notified of all plants suspected of being infected with myrtle rust.