I'd be interested in a trade. The stapelia gigantea and maybe the phytolacca americana interest me. I have some verbascum nigrum and a bit of capnoides (formerly corydalis) sempervirens, a very pretty native. Take a look at my list.

I would also be interested in a trade. I have some sensitive plant, mimosa pudica seeds, that I recently bought. If your interested let me know.

I also have giant rhubarb (Gunnera) which would do well in your zone, and cherry tomato seeds.

Keagan