Hello,
I live in Columbus Ohio, zone 5b, and I was wondering if anyone can give me some advice on my Chinese Elm? It was about 5 years old when I received it last December and it's been doing great until now. I currently keep it outdoors in a spot that gets sunlight almost all day. For the past couple weeks the leaves have been turning yellow and falling off, and some small branches/twigs look like they have broken off. There's also a patch on the trunk that looks strange in comparison to the rest of the bark. I usually water it once a day unless the soil looks wet, I try checking with a chopstick. I thought the damage might be from some kind of disease or pest so I starting spraying the tree with a neem oil spray, once a day for about 5 days now, but the tree doesn't look any better, in fact the majority of the leaves have fallen off and many of the remaining leaves are turning yellow. The tree is still producing more leaves, theres many buds forming on it now, but I'm afraid they're all going to turn yellow and fall off as well. A lot of the new growth is turning yellow, not just the old leaves. I haven't seen any black spots, so I don't think its black spot disease, but I don't know, I'm new to this all. Not sure if it should be repotted, I was planning on waiting until the spring to do that, I'm not sure if September is a good time to repot? Anyways, I was hoping I could get some advice from those of you far more experienced than myself. Thanks!
P.S. The pictures are from a couple days ago, it basically looks like same, just more bare, I think they get the point across.