The leaves are falling off for Autumn, can I treat the trees, I have 6
12 May 2021 10:38 AM
The orange-powdered substance that you have on the undersides of your Frangipani leaves is rust. It will be best to rake up all the affected fallen leaves and dispose of them.
To control rust, we recommend 'Yates Rose Shield - Black Spot & Insect Pest Killer'. All-in-one product for the control of various insects, diseases and mites, for use on roses and ornamental plants.