Yes, they do make seeds. If you let the floral spray dry, and you look very closely, you will see the seed pods with very small seeds inside. I have never tried separating the seed - they are so small - I just crumple it and plant most of it. I used the winter sowing method and ended up with more seedlings than I could use. You could also root cuttings but layering would work just as well. Such lovely plants.