Pretty sure I have some seeds for this plant. Let me check my seed box when I get home from work this evening:)

Thank you for the advice wonbyherwits, Sadly, I think that you are correct. There is absolutely no smell from the leaves. It looks like the hyssop might not be coming back this year. I did have gaillardia growing in a couple of places for several years but it's slowly been dying out without my intervention. I didn't even give thought to it reseeding so far away from it's original spot. I've been searching for the website that had leaf identification on it (no luck). I know that one was posted here before. Would anyone happen to have the link for it?

would be interested in your wild bergamot have several of what you are looking for, let me know

Anise hyssop (Agastache foeniculum) doesn't spread by roots, however I have read in these forums that some people find its seeding to be excessive... I haven't found that, though, in a whole lotta years of growing them.