Beginner Gardening: Question about Stella D\'Oro, 1 by PhilS46

PhilS46 wrote:
My Stella D\'Oro lilies are new to my garden. I didn\'t plant them until June but I did get a few blooms from them. Recently I saw a strange growth on one ( please see attached picture). Only one plant has these pods growing out. I looked closely and it doesn\'t appear to be another plant growing near. I never saw this until I planted the lilies. Is this what they do when they \"go to seed\" ?

Any help would be appreciated.

Phil