what is the yellow dryness on my Japanese maple?

Question

One section of the top of my dwarf Japanese maple has yellow drying leaves scattered over it.

Answer 1

This can be caused by either a fungus or a pest. But there are several of each that it could be. I would recommend treating it with a general pesticide and fungicide. Consider using neem oil as it is both a pesticide and a fungicide, so you would only need to apply one spray. Plus it is safe for people and pets.