Hi Alda-- Alot of the older lantana's do make seeds. But alot of the dwarfs and trailing do not. They seem to be sterile. I take it you are familiar with the seeds. If they have not been forming on yours, then you could take cuttings to make more plants. I have found that usually when a lantana does not set seed. It is not very cold hardy. Depending where you are it may need cold protection in the winter. Many blessings for a wonderful week.
