Garden Pests and Diseases: Pest Damage or Overwatering???, 2 by LupineNight

LupineNight wrote:
I gave my elderly grandmother this Petunia a couple of weeks ago. It was doing well until the last few days. It obviously has pets too, which I sprayed for today. The most damage is to the leaves at the bottom of the plant stems- they are completely brown. Is all of this due to bugs, or is the browning and wilting because of overwatering? Thanks in advance for any help!
p.s.- the arrow is pointing to what I believe is an aphid cast. I was hoping it would be clear enough once I posted it, but it's not.

This message was edited Jun 19, 2014 6:10 PM