I have two Pouteria campechiana in my greenhouse that are four years old. They seem to be growing well, but lately, the majority of their leaves are looking like this.
I am thinking it is a nutrient problem.
Too much of something?
Too little?
They get Miracle Gro and Osmocote Plus. Lately, with the irrigation water getting into the greenhouse, the pot has felt a bit heavy. Too much water?
There are little specks that can be seen on the leaves, but there are no insects on them, even under a microscope. If it is something like spider mites (which I DO have in there in a very limited way), they are not showing themselves. The white specks look like dandruff under the microscope.
Any assistance would be appreciated!
Thanks!
Carolyn