I have failed twice in attempts to grow Phlox Paniculata by seed. The failures were probably "operator error," since I did not know about the need to stratify them. So, I tried it the second time I planted seeds and there still were no sprouts. I want to try again, this time after getting information from people who know how to get the seeds to sprout. When I planted the seeds, it was in clay soil with a lot of compost added. I kept the soil moist but not soggy by daily sprinkling. It has been three weeks since planting the second bunch, and no sign of sprouted seeds. It seems to me that the key must be to start with seeds that I know are still viable.. I would like to try this last experiment by: 1. Sowing seeds this October which I would buy this summer from a reputable seed comany, (like Park Seed?), and plant them this October and let nature stratify them for sprouting early next spring. The catch here is -- would the seeds which the company must have harvested in 2023 be still viable as late as this October? Or, 2. I could possibly buy seeds next January or February from a seed company that would have harvested them this fall for planting in spring, 2025. The problem there might be--did the company stratify the seeds durng the winter? Might they have a special way to do the stratifying over the winter? I will appreciate any reaction to my above ideas and questions that you can provide, and also I would love to receive any suggestions you feel I should know before I plant the seeds. The CSU Extension Service has come valiantly to my aide for many years. I appreciate all the service you render.