I've been asked several times when I'm going to dispose of this weed but I can't until I know what it is!
It appeared sometime around July, which was when the following photo was taken. It is now over 6 feet and showing no signs of stopping. No flowers, but it is throwing out a new branch at every leaf node and getting terribly large! The stem, or should I say trunk, is some 2 inches across, and it has roots going up the side, where it is leaning over. The stem is speckled with pink-purple dots, similar to a giant hogweed, starting from the base and spreading up as it matures.
Any suggestions eagerly received.