I guess the flies did their job because I now have seedpods.
And it didn't take long for the spotted stalks to come up...
Even some precocious unexpected baby stalks came up. It takes a day or two for all of them to spiral out their fronds.
I now have whiskey barrels full of these things. It took only a month to go from flower to full grown plant.
A couple years from now...oh, I could have thousands of these things. Thousands. My present little plot on the prairie is going to look like something from the set of an old Outer Limits show...if it doesn't already. :-)