Myrtle rust is a serious plant pathogen that impacts New Zealand taonga native species such as pōhutukawa, mānuka, kānuka, rātā, swamp maire and ramarama. It also impacts exotic plant species such as feijoa and guava and eucalyptus. Myrtle rust is an unwanted organism that has spread in New Zealand, however, you can help slow the spread to protect our taonga species and help us to track its movement.