Yellow foliage on Ninebark
I have a mature ninebark, one of the large, dark-leaved varieties but I don’t remember which one. It is exhibiting bright yellow/chartreuse foliage at the growing tips. I pruned it quite severely in the late winter, but it was leafing out nicely until these tips showed up. Could this have anything to do with our recent wet conditions? I see some spots with dead tissue and holes, but I don’t see any insects on it that I can perceive with the naked eye.
Baltimore County Maryland
We cannot say for sure what you are dealing with. It looks like a type of root damage. We recommend that you prune affected areas during dry weather and see if it grows out of it. You can send us more photos if you notice additional symptoms.