Do I have to sow all the seeds at the beginning of Winter?
I sow seeds all throughout the Winter. I'll start Winter Sowing my seeds sometime around the very end of December or the beginning of January and I'll keep going right up until the very end of the Winter season. As long as it's still quite chilly at night you can Winter Sow.
Tip suggests these links for further study.
Earth's Seasons
Astronimical Applications
U.S. Naval Observatory
Insect Weather Prediction Folk Tales
Yellow Medicine County Bug Camp
4H Center Extension Programs
University of Minnesota
AmericanFolklore.net
