I got a lemon about a month ago and have been trying to figure out what's wrong with it! I've given it water to what they recommended, vitamin juice, spray against bugs, and it seems there's about things still going on and getting worse! It's a year old tree. I'm in arizona. Its losing leaves, splitting bark, yellow leaves next to really green leaves, leaf curl, what looks like dust on some leaves. No obvious signs of leaf minors, but I do know some bug is getting after some of the leaves.

Help!