Damaged leaves of banana shrub and jasmine
I have a banana shrub and an Arabian jasmine potted in separate pots but next to each other. I've had them for about 1 year, and since a few months ago, both plants have been having similar problems with their leaves. About 10-20% of their leaves appear to be deformed entirely, or partially burned, or as if being chewed up along the edges. Yet I cannot find any visible bug on the plant. I observed some of the leaf buds just seem to grow out that way, like a genetic defect. In addition, some of the young buds of jasmine just don't develop and die. Please help identify the problem and share some insight how to cure it. I really appreciate your help!