Rust Fungus
(Coleosporium domingense)

Click on image for a larger photo.

Orange Pustules
Underside of Plumeria Leaf

Orange Pustules
Underside of Plumeria Leaf

Yellowing Area
Topside view of Rust damage

Orange Pustules
Underside of Plumeria Leaf

     Rust Diseases or Rust Fungus occurs on a wide variety of plants, including Plumeria.  In general, however and given rust is rather specific in its host range.  Many rust have several kinds of microscopic spores.  With such forms, the fungus may infect two entirely different plants living part of the year on one host and the remainder of the year on the other. (which in the case with plumerias)  The presence of a rust disease can always be determined be the appearance of yellow, orange or reddish-brown powdery pustules on the leaves, stems, or buds of the infected plant.  The spores produced in these pustules are carried by splashing rain or air currents to near-by healthy plants where new infections will occur. 

Rust Fungus does not kill Plumerias, but can rapidly de-foliate an entire tree.

How to Control Plumeria / Frangipani Rust Fungus
Rust fungus will over-winter on infected plants.

1.  Keep the growing area clean and free of fallen leaves.

2.  Carefully remove and place infected leaves into trash bags.

3.  Mild outbreaks can be controlled by GreenLight "Fung-Away" spray.

4.  The best product for preventing and curing Plumeria Rust is "Plantvax 75 WP".
     (this product may be out of production, but there is still a huge supply around)

      Plantvax is sprayed once a month and provides complete control.
links to...
 1. Greenlight  Co. HomePage

2. Buy "Fung-Away" spray online

links to...
"Plantvax 75 WP" 


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Plumeria 101 / Michael Anders