Frangipani Leaf Disease. Fortunately the disease only affects frangipanis. The biggest disease problem with frangipani in australia is rust it usually strikes after christmas when we get the rainy periods and high temps.
Frangipanis are prone to infection by the fungus coleosporium plumeriae commonly known as frangipani or plumeria rust. An orange to yellow powdery substance actually pustules appears on the underside of leaves. There is a new disease attacking frangipanis in australia called frangipani rust or plumeria rust.
Frangipani rustis a severe problem in florida and has been a problem in queensland for the past 12 years.
When these rupture they release spores that infect other leaves. It is most noticeable in late summer and early autumn. Although it can look very unnatractive it has no real worry for the plants as the leaves will die drop off the spores spread through the folliage and the. Frangipani rust is a fungal plant disease that is spread via the powder spores that get carried away with the wind or through overhead watering.