Plumeria leaves looking strange
Greetings from horribly humid and hot Florida. I have an issue with some plumerias we recently bought. The gentleman we purchased them from grows them at his home and he has quite the plumeria garden. Unfortunately I cannot get around to his home else I would ask him what may be ailing our plants.
The leaves are beginning to get yellow and faded with some strange spots. The plants are watered weekly when the soil feels really dry. It has been hot as hades here recently and I am not sure what it could be. We have not fertilized or noticed anything creeply crawly under the leaves. They are in partial sun in 10 inch pots with a cactus plant soil. We were hoping they would make it a few more weeks until our new home is finished then we could plant them in the ground but the concern is that whatever this is may kill them.
I included a link that has pics of the leaves. Any advice would be greatly appreciated.