What is Frangipani Rust?
If you can see little puffs or pustules of golden yellow powder that start out on the underside of your frangipani leaves and resemble pollen, this is frangipani rust (Coleosporium domingense syn C. plumeriae)
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. Spores can spread for many kilometres in strong winds or just a few centimetres with a slight bump or breeze. See below our recommended way to control and help prevent the spread of rust to other frangipani plants.
Step 1 - identifying the rust
Turn over leaves and look for the tell tale signs of the golden yellow pustules of powder and decide whether you want to do anything or not. Remember that rust won't hurt your frangipani cutting or tree. Rust is generally only a concern for frangipani seedlings and can harm or kill small seedlings if left untreated.
Step 2 - Controlling the rust
Remove all affected leaves by cutting them off with a clean pair of secateurs. Rake up all the dead and fallen leaves on the ground
surrounding your frangipani and then bin all of the leaves in your garbage bin (not compost) as the rust spores can re-infect other frangipani from the reuse of the compost. For large trees it is not practical to remove all of the leaves by hand so this exercise is best done in mid winter when the tree is bare or growing slower.
Step 3 - Spore control
Using Stop Rust Plumeria rust control spray, treat any remaining rust spores by spraying both sided of affected leaves. Secateurs can also be sprayed to kill spores. This product does not cure frangipani of rust due to the systemic nature of how plumeria rust grows and travels within the host plant but it does
help to control the spread of spores. With good hygiene and use of products like Stop Rust Plumeria rust control spray & Stop Rust Plumeria rust systemic ground treatment, this will allow the user to control the frequency & severity plumeria rust outbreaks.
Stop-Rust Plumeria rust control spray
Stop-Rust Plumeria rust systemic ground treatment
Step 4 - Treat the ground
After you have removed all of the affected leaves, treat the ground with Sydney Frangipani Stop Rust Plumeria rust systemic ground treatment. This product is mixed with water and applied with a plastic watering can to the entire root zone of the potted or planted plumeria. This product works differently to fungicides as it makes the plumeria undesirable to plumeria rust. After correct, regular applications the frangipani will show reduced signs of rust. For more information please read the usage guide below.
Close up - sprayed vs untreated
2 x applications of spray two days apart. Photo taken after 5 days
Stop-Rust Plumeria rust systemic ground treatment usage guide
MSDS Stop-Rust Plumeria rust ground treatment
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