Common rust disease causes premature leaf drop of frangipani (plumeria) plants.

A rust (fungus) disease, Coleosporium plumeria, defoliates many varieties every year.

Top photo: The rust disease coats the underside of the leaf with orange pustules and causes leaves to turn yellow, then brown and rapidly defoliate in September-October.                                                                                                                                          Bottom photo: Powdery mildew of ‘Bridal Bouquet’ plumeria.

Read more on susceptible frangipani  varieties, click here

Frangipani pests, article by Doug Caldwell, click here

A recent report on powdery mildew of Bridal Bouquet frangipani, click here