can I remove all the leaves with rust from my plumeria?

Question

I’m concerned if I remove all the leaves on my potted plumeria that I will kill them. They look to be heavily infested with rust and it will take a lot of spraying.

Answer 1

You can remove the infected leaves and the plant is not likely to die. It will re-foliate. But the new leaves will become infected if you don't initiate a preventive program. Sanitation is important, picking up and disposing of infected leaves that have dropped, as well as picking of infected leaves from the plant.
Preventive treatment includes good soil and water management, including fertilization to build plant nutrition and resistance to pests and disease.

https://www.gardeningknowhow.com/ornamental/flowers/plumeria/plumeria-plants-with-rust-fungus.htm