I planted some Voodoo Lily bulbs I got a Menard's a few years ago. Nothing came up for a couple years, and then last year I noticed the appropriate leaf pattern on a plant in that area. Last year there were only leaves, but this year it came up again, and I came out the other day to see this - an unopened bloom!
This morning I came outside and saw this. There were flies swarming everywhere around it. I went in to take a photo, and the rotten meat smell was so overwhelming that I had to hold my breath.
A closeup of the flies. They love this thing.