All seed Asclepias syriaca collect here on site. Seed should kept cool/cold.
Needs to be put in a plactic bag with a wet piece of paper towel and placed in a refrigerator for 3 months before sowing. Keep away from ripening fruit, ethylene gas given off may be injurious to the seed.  May take 2 years to flower. Dispered seed will create more plants. A hardy perennial in Zones 3-9, Ships Free, interested in plants or more photo's visit https://www.comnur.net/product-page/asclepias-syriaca-50-each-2-x-5-deep-plugs