Just a reminder, you can also use the flower stalks to generate new plants! This is especially useful on those hybrids that are sterile, but flower profusely, such as D. hybrida (= D. filiformis x D. intermedia), D. beliziana (= D. intermedia x D. rotundifolia) and D. obovata (= D. anglica x D. rotundifolia), and many will still produce new plants even after the seed has been harvested. - Rich