Guava rust; Eucalyptus rust (Puccinia psidii) is a fungal pathogen of Guava, Eucalyptus, Allspice, Rose Apple, Clove. It is a native of Brazil and was first detected in Florida in 1977.
This rust affects seedlings, young trees, leaves, stems and fruit in trees of the Myrtaceae Family.
For more information about this plant pest, see the CABI data sheet.