I need gardeners help again!!
I have couple of young lilac trees on the back yard of which one has got powdery fluffy stuff on some branches and not sure what I'm dealing with here, mildew? Fungus? Some bugs? I found couple of weird looking creatures on couple of leaves, never seen before. It had already last summer this powdery stuff on these branches and I managed to get rid of it by rubbing it with neem oil couple of times, but it's back now again. Nothing on the leaves though. Do I have to cut of these entire branches now, or is there another way around it? Help!!