Interesting, since I've been hearing that Sauromatum are hardy as far North as here - indeed, I just collected some plants that look like Sauromatum (But not sure yet) - here, while no Amorphs are hardy here. I don't risk anything by putting it outside unnecessarily (You only end up losing prized plants) - so I stick with the native Jack in Pulpits for that exotic look in my gardens, for aroids.