Hardy to Z6, I think I would leave them alone, possibly protect if you have a severe storm forecast but only for the duration of the storm.

I have iris chrysographes (my fav iris), glaucidium, and a genista that my neighbor wanted, all Fall sown that have started to germinate and when we had a dry 18F a couple of weeks ago, I moved them to my semi-enclosed porch and dropped a towel over the pots, removed it after 4 days....they appear fine this week.

Or you could move them temporarily to your garage if something nasty is in the forecast, move them back out into needed light when the weather passes.

Ok, I think they will be fine if I leave them where they are. I have them on the south side of the house.
Thanks.

You are welcome for the seeds! They are now being sold as popcorn shrub and Chinese chestnuts. They are hardy here in zone 4 Utah. They do not like to be transplanted to young! give them some time in the containers they sprouted in to build a good root system. I love both of these trees they are so awesome in bloom. Good luck Keep me posted on there progress. G

Aquawise! I remember now :) I will keep you posted. Thanks for letting me know not to take them out too soon. I love watching them grow and have to go out and peak in on them daily.