This plant has a tough time blooming every year. It usually looses three possible spikes before it makes one that matures. This year it finally made two. I also have "Bluebird" that is spiking for the first time with two spikes also that I will post when they open.
Paul, my best guess would be that the buds dried up due to the high temperatures that we have in Florida. They always seem to develop in the fall when it is somewhat cooler.