You did not kill your seeds. If cold weather killed seeds, there wouldn't be any plants in most parts of the world. All of the seeds you listed are seeds I will be putting outdoors in the next few weeks to be frozen until spring. In the spring they will pop up just fine after being out in snow and cold for months.

Check out the Winter Sowing forum and you will find hundreds of folks putting there seeds outside in the freezing cold right now.

They are seeds I store in the freezer!!
Your seeds will be fine.
A cool/cold and DRY environment is what you want for seed storing (unless winter sowing, of course)!

Thank you Rosa & Nurmey, I feel so much better knowing I didn't kill my 1st babies. I visited the winter sowing forum & they agreed with you. Don't know if I'll get up the nerve to winter sow, but I might. Sure sounds interesting. I have soooo much to learn...sigh.

Join us Carol! We are having a ball winter sowing and your poppies, coreopsis and larkspur would all do well winter sowing RIGHT NOW! How fun is that?

Reconsider and join us!
Bakemom