It's HUGE, man!
A while back I tossed some wildflower seeds into a bed in my front yard. I don't know if this scattering of seeds is related to the eruption of these plants or if they are just really big weeds. The biggest one is probably six feet tall. So far, I'm seeing no sign of flower buds.
I've let them stay so far because the foliage is really pretty and whatever they are, they have a bit of impact.