Paw Paw is only native to extreme southwestern ontario. I have some seeds in my crisper right now that will be ready to be planted out this spring. You need 2 trees for cross pollination and they can't be from the same clump.
This is my first time on this forum, so not sure how to go about the exchange. You would need to instruct.

This is a great forum!

From what I have read, it will withstand winters to -25 or lower so should be ok here. It's the dryness that it needs and, so doesn't do well on the east coast. I am hoping it will do well here in a dry spot. Time will tell...

I am sending you an email with trading info :-)
Thank you!

Oops! Can't send you an email unless you give the forum your email address. If you'd rather, you can email me directly. I will need to give you my mailing address and you will need to give me your's so we can swap. The seeds I have to offer are at the link below on this post.
Send me an email through the forum (click on "My Page" beside my name. Let me know what you want from my list.)

Maybe you can make a trade list for yourself and we can do a larger seed trade, but I am happy with just the Pawpaw seeds :-) How fast do they grow?

Here is a link that might be useful: My seeds for trade