Per previous post, maybe Lilium formosanum. Here is a link that might be useful: Lilium formosanum

Maybe a variety of Veronica.

I posted a link to this photo on the OP's other thread, which has more information: http://forums2.gardenweb.com/forums/load/namegal/msg0820442413764.html

Thanks for the responses. Since we are a little bit south of you, bogturtle, the yellowing may be a little later here. We haven't had much cold yet and I do have a few yellow leaves at this point. Mistascott, thanks for the idea. I will try posting on that forum. So many of my plants seem to be slow growing. For that reason, I agree that it is probably wild. The things that I would love to have grow quickly, don't! Very irritating that something I didn't plant is flourishing! Thanks so much.