A
blue cardinal flower growing in the spot set aside for irises,in the shadow of a peegee hydrangia: (click image)
I suspect it's a sport of a hybrid cultivar, Victoria Strain, which went to seed a year or so ago. This is the first time I've seen such a plant.
About a foot away, a Cardinal Flower
L. cardinalis , which grows locally in the wild, is blooming: (click)
Both plants are from the same parent.