Funny you should mention this, a friend just asked about the same plant. Looks like it is not native and usually found on "roadsides, waste places, old fields".

That would lead one to believe it can be a aggressive.

Here is a link that might be useful: Moth Mullein

Thanks, esh, for the link. It is indeed listed as "alien" but it sure is pretty. But then, I liked the ox-eye daisy until I found out how invasive it was! LOL :) Doesn't take much. . .

I would much rather have any self seeding flowers than the rampant crabgrass taking over my garden.

Nancy the nancedar