Q.Calla lilies have cones in the flower head.
My pink and choc callas have flowered and now the flowers appeared to fall over. They have developed bulblike structures inside the flower. What is this and, what do I do? Are they going to seed to create more rhizomes?

Certified GKH Gardening Expert
The cone-like structures contain seed that you can replant in the garden. However, seed may not come back true to the parent plant if it is a hybrid, so if you do not want different looking seedlings, you can discard the seed cones.
https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/calla-lily-seed-info.htm