Posted: 01/07/2013 at 12:25
After a second look at the photos I think the 2nd photo is Physostegia virginiana or Obedient plant. It flowers from August till November. That would also explain why the flower buds aren't showing yet.
I'm with Fairlea that this is Achillea ptarmica, though not a cultivated one. I think it's Sneezewort.