I've looked everywhere for these and can not find a US source for seeds. I made have some seeds to trade but piles of gratitude will come to anyone who can procure me seeds. Thanks!
I've got plenty of A. fistulosum seeds, if that's what you mean. They're called Welsh onions up here in Fairbanks and survive our winters without any problems. The stalks can get a couple feet tall. Here's the Wikipedia article on them: