We never lift the bulbs here. They stay in the ground year round as far north as Georgia, maybe farther? I know I have a friend in GA who leaves them. Some of the VooDoo lilies reproduce by forming new bulbs on the blooms when the plant is getting ready to go dormant in fall. You can just pluck those off and plant the and get a whole stand of plants.
I should have said on the leaf nodes not blooms.