I saw a picture of one of these plants on someone's website from Chicago... not quite as tall as the one growing here in Mt. Vernon. The first picture is by my Dad about a month ago when the plant first started to bloom.
The following pictures were taken this morning. It really has grown quite a bit taller in just a month's time As you can see, the plant is almost finished blooming.
Without sounding trite, I guess they do grow stuff BIG here in Texas.