Thanks Neal. I asked Bill about it also, and he said sometimes they do, and sometimes they don't. I thought maybe I had stressed them, and that's why they were blooming.
I can't believe I've missed them before, as I fertilize my containers heavily, and part the leaves before I put Miracle Gro on, but anythings possible. An it could be the fertilizer.
I will pay better attention in the upcoming years, and see if I'm just missing the flowers.
I will take your advice and pinch them off, though.