The one in the foreground with the white flower spikes isn't but a couple of the ones in the background might be though it's hard to tell with this photo. If no one can definitively ID off of this pic, you might try posting a closeup of the plants in the background along the top of your photo. You also have some Japanese stiltgrass along the bottom edge.

Oh, I know about the stilt grass.. Tackling that and the garlic mustard have been all consuming. I moved into my house last fall and have been dealing with years of neglect this past spring and summer. I have no idea what that plant with the white flowers is so I just assumed the worst (knotweed). I'm out currently but will post pics of the other plants when I get home. I have managed to find some beauties in between the weeds like goldenrods, asters, and lance coreopsis growing along the woodland edge (where that pic was taken) so maybe it's another native wildflower? Getting hopeful!

Persicaria virginiana

Japanese knotweed would normally be huge by this time of year (6 feet+). Unless you've mowed recently, if there were smaller shoots, I'd expect them to be right next to a larger mother plant.

Thanks for the tip ajs317. Jekeesl is on the money. I believe what I have has to be persicaria virginiana! I truly appreciate everyone's input. Thank you!!!