Q. Please tell me what this is. Is it the reason my redbud tree is dying by degrees? I’ve also seen some on my Japanese maple and a Virginia pine. Should I be worried? — J. Castelloe, Chesapeake. A.

Question: I am sending you some pictures of my Eastern redbud tree. It has some problems, and I want to know how to correct these. The redbud problem is pretty common with the Eastern type, our soils ...