Any particular reason a hosta won't flower?
I bought some Grandiflora hostas (Hosta plantaginea Grandiflora) two summers ago at Arrowhead, they were blooming when I was there and I almost fell over when I got a whiff of the fragrance - it's fantastic. The flowers were actually very pretty too, large and pristine white (normally I cut off hosta flowers, I don't care for them, but the flowers are definitely a feature of this hosta).
So wouldn't you just know it - no blooms last summer. At all. The plants themselves seemed fine, they looked pretty healthy, so I have no idea why they didn't flower.