Large Stalk Weed
That is American burnweed. You want to pull it (after a rain they come up easily) or dig it out before it flowers and sets seeds.
Here is our page on it: https://extension.umd.edu/hgic/topics/american-burnweed
There should be more pictures posted for many of the weeds for better identification.
Thank you for your comment. We do want to expand our weed gallery to include more photos of the different life stages for better identification.