- Widespread distribution. Asia, North America, Oceania. On frangipani, and Madagascan periwinkle. Spots yellowish-orange on the underside of leaves, bursting to produce powdery spore masses. Brown patches above. Usually, minor disease, although leaves fall earlier than normal. Unsightly.
- Spread as spores by wind; leaf wetness to infect.
- Cultural control: cuttings from disease-free trees; collect fallen leaves and burn; tolerant varieties.
- Chemical control: nurseries: chlorothalonil, copper, or mancozeb (protectants); or oxycarboxin or tridimefon (eradicants).
Pacific Pests, Pathogens, Weeds & Pesticides
Frangipani rust (243)
Photo 2. Underside of leaf showing pustules of frangipani rust, Coleosporium plumeriae, liberating masses of spores ('urediniospores').
AUTHOR Grahame Jackson & Eric McKenzie
Information from (including Photo 4) McKenzie E (2013) Coleosporium plumeriae: PaDIL -(http://www.padil.gov.au); and from Coleosporium plumeriae. BugwoodWiki. (https://wiki.bugwood.org/Coleosporium_plumeriae).
Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.