Daniel, the best place on Gardenweb to look for plants is the Plant Exchange Forum. You might also try the Native Plant Exchange Forum, but it's less active. Also, some of the other forums, like the Hosta Forum, have exchange pages. This Forum is used for discussion.

BTW, I noticed the comments on your Member Page. Sounds like way too much drama. Maybe it's none of my business, but if I were you, I'd move those comments to your thread on the Rate & Review Exchanges Forum or just delete them all together. You only have two reviews and your other one is really really good. You could also get others, that you have already traded with, add good comments to your Rate & Review thread. I wouldn't let one rotten egg stink up your reputation.