So anyway, the plant begins to put out clusters of blooms.
As you can see when you look closer, these are what I would call bloom pods.
Now we move on to the penultimate stage, where the red pods open and the true blossoms burst forth in a blaze of . . . surprise . . . yellow color.
Once the plant has fully bloomed it's bye-bye, baby. The mighty Century Plant, having put on a fabulous show, will die. As my friend Phil commented, it reminds him of the salmon in the Pacific Northwest that spawn and then die.