Milkweed Planting Instructions
Placing your seeds in the refrigerator in damp paper or cloth towels inside a sealed bag or container for at least 30 days prior to planting will greatly increase your germination rate. . This is called vernalization or cold-stratification.
Sow in spring, either outdoors or in pots with 1/4 inch of soil on top of the seeds, and keep soil moist until germination.
Links we like: https://xerces.org/milkweeds-a-conservation-practitioners-guide/