Cold weather and repeated exposure to moisture softens seed coats and dissolves inhibiting chemicals when conditions are optimum. To do winter planting, find an area in your yard that has bare, humus-rich soil and is free of snow. Then seed according to the general seeding instructions on page 20. Since the ground will probably be frozen or wet, it might not be possible to set seeds by raking. Seeding just before a snowfall will press seeds into the soil and provide a protective blanket.
Native seeds vary in appearance, hardiness, growth patterns, and germination rates.
Keep in mind biodiversity and try seeds in different spots until you find the best places.