Milkweed seeds can be started directly in water with no cold treatment, although germination rate might be less for some species: Put milkweed seeds in a bowl of water Place the bowl inside a plastic baggie OR just place seeds in a container When do you see the seedlings emerge? Seeds from some species require cold stratification, so if you let the seeds disperse they will sit dormant in the garden until spring. You could also put off planting until just before the ground freezes or before your first major snowstorm. Find seeds here if you still need to buy some. thanks 7. All rights reserved. Just be sure to poke holes in the containers so excess water can drain off. Stratification is when a seed is moistened, chilled or frozen and thawed, breaking down germination inhibitors on the seed coat, such as waxes, hormones, oils or heavy coats. Just trying to do my part! good luck!