I have a weed that's cropped up in a peculiar spot in my backyard. Growing inbetween two fences it has grown to over six feet tall! It looks like a single stalk ending in a gnarled cluster of Dandelions, and for the life of me I can't get an idea what it could possible be called! Has anyone else here seen anything close to this plant in their gardening experience?
Note: The wooden fence in the photo is taller than I am, and I'm 5' 9". This weed is taller than that same fence!