I was going to mention the ATP site also, but realized it does not really give a date for winter sowing (as I interpret it). The inside sowing date is for the type I often do( sowing seeds in cups, etc and growing them under lights), but winter sowing is for outside, but not directly sowing in the row. I don't see why (based on the fact that they spring up in the spring time) they could not be winter sown any time, am I wrong on that?