"weather at my place is still in freezing temperatures at night and slightly above freezing in afternoon. "

You answered your own question. If you sow seeds they're not going to sprout tomorrow. It's too cold for any except the hardiest to sprout...and that's still going to take several weeks. Nicotiana and Alyssum are likely the eariest sprouters, both are remarkably hardy to the cold.

With confidence you can sow now. Good luck with your seeds.

thanks a lot.

time to visit my friend who gives me empty 5 ltr water bottles :)

I had nicotiana and alyssum sprout in early January. I sowed them Dec 21 (winter solstice). Both have done well considering the single digit temperatures and two snowfalls we've had. Lots of other sprouts have come through as well. My virginia stock has also made it through the cold. Don't worry about them. Sow them and enjoy.