That's interesting...jewelweed...hoping I don't have to try it, but I'll remember to check this thread if I have to again. I still can't find P.I. in my yard. I did go plant shopping with a friend the week before, but we were not in any brushy or uncultivated areas that I can think of. 'Just a few local nurseries along the back roads.
As for the mopiness....I'm usually "upbeat," so I knew something was wrong when this hit me out of the blue....for no good reason....such as not getting my way, or being peaved at husband, catching a cold, etc!! It's better today, but still have that lingering feeling that something's not quite right.