Silver leaf nightshade
Pros: pretty flowers, grows wild, drought and heat resistant, host plant to white horseman butterflies
Cons: invasive with deep roots making it hard to control in some cases. Is poisonous to cattle and people if eaten
Thanks 8point and Rustler. I found some interesting facts on this from a book - the Indians would use the fruit (that yellow stuff coming out of the flower) to make cheese as well as to treat sore throat and toothache. They also mixed it with some sort of cream to treat poison ivy. It is also deer proof. But yep - it is very invasive.