Oops...It's Black-Eyed Susan!

I'm as red as the Radio Red salvia. What I have been calling Mexican sunflower is actually Black-eyed Susan!  What a silly mistake!  Of course they're Black-eyed Susans!  So, okay, Black-eyed Susans are my favorite flower in my butterfly garden.  I hope these are a perennial variety, but will let a few flowers form seeds just in case it's the annual.