This is an Amorphophallus konjac I gave to my DD a few years ago. After it died back, she left it in the pot and put the pot away. Didn't do anything last year, so this year she told SIL to dump the dirt so she could use the pot. He saw a small stem coming up and they decided to wait and see what it was. It was a "stinky plant."
I encouraged her (maybe pushed her) to enter it in the flower show. It received a blue ribbon and a green thumb (means it received a score of over 95). .....I still think that pot looks familiar......