The first time I have gotten an Amorphophallus to flower. I believe its an Amorphophallus konjac..
I had it dug up and in the garage for the winter to prevent it rotting in the ground. had it up on a shelf next to some ornamental items and my partner noticed the flower, already to this stage. I've grown these guys for a good 10 years and the first flower happens totally by accident, go figure.