That doesn't look like any pest I can identify on Psidium, however it does resemble a Eucalyptus pest common in Florida. Does this plant by chance sit near or under a Eucalyptus tree?
No Eucalyptus around. Just sits alone in the corner of my yard. There is a banana tree on the other side of the wood fence in my neighbors yard. I was thinking this was some kind of fungus??? It's been very rainy here lately.
Could just be a Lichen then, which would be harmless. http://www.anbg.gov.au/lichen/ecology-foliicolous.html
That first picture looks like it exactly!! Thanks. Someone told me they thought it was Algai Leaf Spot. What do you think? If so, how do I correct it.
