I have something on my plumeria leaves... I don't know if it is fungus, rust or chemical burn I haven't noticed it until about two weeks ago. It doesn't seem to hurt the plants... it is just ugly.
Can someone tell me what' wrong?
Here is another plumeria with something different... It is only on the top of the leaves???
on top???
I'm pretty sure the second one is evidence of a virus, possibly the Frangipani Tobomosaic Virus (FrMV). There is another thread here with pictures of it: http://davesgarden.com/community/forums/t/759034/ The first leaf may be an example of it too. Here is another thread about the virus: http://davesgarden.com/community/forums/t/754821/ There is still more info. on it in the Sticky Thread. Unfortunately, this is getting more and more common these days. The virus spreads easily by transferring sap so you will want to take care not to transfer the sap from these plants to your other plants.
On the other hand, this is the time of years when leaves turn all sorts of ugly before they drop as the plant prepares for dormancy so I wouldn't rule that out. Kukiat is the expert here on the viruses which affect plumerias so I would get his opinion before concluding that it is a virus. Have you seen the flowers bloom on this plant, and if so, was there a color break on the flowers? That would be an indication of a virus.
Thank you for the info...if it is the FrMV is there a treatment for the leaves??
The first pic on the variegated leaf looks like it could be burn perhaps -- maybe like water was on the leaves during full sun, or something got sprayed on it. I have some leaf drop here as the nights start to cool, and sometimes the leaves turn yellow before dropping, and sometimes they look spotted and deformed before dropping. It is just the natural course of things. There is no cure for the FrMV if it turns out to be that. You can always remove unsightly leaves, but if your plant does have a virus, be careful not to transfer the sap to your other plants because the virus can be spread through the sap.
Does the virus only effect plumeria?
No, it effects many plants in the same Family, but I'm not qualified to say if it is the same virus or not in other Families. Here is some information about it: http://image.fs.uidaho.edu/vide/descr345.htm My friend in Thailand has seen the color-break virus on the flowers of a Euphorbia, which has the same milky white sap.
Truetropical77, When did this start showing up? Jerry
There are several types of Mosaic Viruses, Tobacco, Lettuce, Pepper, Tomato, Alfalfa etc. I know some mosaic viruses will transfer from one species to the next, you can find alfalfa mosaic in lettuce, not sure if this holds true in Plumeria though.