I was wondering the same thing. I "HOPE" to have a surplus of seedlings and like the idea of swapping rather then just cramming them in somewhere OR leaving them in the germination container until fall (Or until they croak)
For many I think using the HunK o Seedling method would work for shipping. Just wrap the roots and moist soil like the roots of a plant. Then wrap in paper towel/ newspaper like any small plant.
Any other ideas/suggestions?
bethb

Tina, thanks for the good info.
Hopefully birhudugi is still around and interested in this. As we get closer to the right time and know what surplus is available, I'm very interested in swapping some surplus seedlings.

Count me in as well I am already thinking about who might 'adopt' some seedlings.

This is an old posting, but 2015 is the first year of WSing for me...so did you all have successful WSing last year, and did you have alot of seedlings you wanted to trade? Were you successful in posting trades or ??
I was wondering the same thing about trading seedlings, and if they were too tender to mail!

I did not have much from winter sown containers last year, but hope I do this year. I learned a lot from my mistakes (that being my first year and all). I hope this year is better. Are folks still open for a swap/exchange this year - say some time late April? If so, we can try and set things up. Will be nice to meet everyone and also give any extras to good homes.

A couple things:

1. I am very curious why your first year of WSing did not work very well, and what in particular you think the problem(s) were and what you learned

2. I might be in the "mail" seedlings/swap/trade category. I would suspect that we are all fairly spread out across the country. One would have to look on here for local plant swaps for your area. Where are you located?

few mistakes I made.
1. Placed the containers without any way to stop them from blowing in the wind.
2. They fell off the table and some of them got ruined.
3. Perhaps the depth of soil was not right.

I sure hope I have fixed all those problems this year and am more successful.

I am located in NJ (Central NJ to be more precise). Yes, I was looking for local plant swaps and was wondering if something between philly - NJ or central NJ - northern NJ would be feasible.

when you sign on to gardenweb/houzz, on the right of the home page, there is a (with photo) box Exchanges and trading. You can look at NJ and/or other states near you for postings on upcoming plant swaps/exchanges. I just found this and thought I'd pass it on.