Yes those yellow aphids are the worst. I planted this about 2years ago and it got so infested I thought I lost it and never touched it. Then last year it came back. The yellow aphids are on there again. Not as bad as before. The new growth leaves look good. I'm really excited because as most people on here said that something was eating it they were right I just found the monarch caterpillars. So maybe the aphids and the caterpillars are damaging it to change colors? I just did not know they would turn the leaves to brown and black spots, I thought they just eat holes. I'm happy the caterpillars are there for my kids. I was/am worried it it is a fungus or a disease? I'm still looking at the leafminer posted above as a possAbility? Thank you all for helping me get to the bottom of this
