Your goal should be to create a refuge of lush milkweed for the migrating Monarch and have extra plants in case of any shortages. Refer to the seed packets for special instructions on sowing the seeds. Over the years I’ve germinated hundreds of Milkweed Seeds! I bought the plant in a garden center and it has shed its fluffy seeds once already. Plant seed in fall in a sunny location. Appreciate any thoughts you might have.
Love your site by the way. Spread the milkweed seeds on the top of the soil in the seed tray. 1-2 months after your seedlings have sprouted next spring, pinch off extra plants (or consider transplanting) to achieve ideal spacing for your specific milkweed. Harden the seedlings off to the outside when they are between 3 and 6 inches high. Native milkweed seeds and many other perennial plants need a period of cold stratification in order to germinate. I live near St. Paul, MN.
The milkweed plants are “exploding” their pods right now so it would be a good time to take a walk and collect some fresh ones.