What's this type of flower?

I have been looking for the name of this flower growing in a rest area south of Green Bay Wisconsin. It grows 3 to 5 feet high. I have checked seed displays even a national garden chain store but no one has been able to tell me the name. Anyone out there...

have any ideas?

Hi,

Can you describe the flower? Without a description, it's hard for anyone not at that specific place in Wisconsin to think of anything.

Thanks.

Here is a picture - plant grows 4 to 6 feet tall - has bright green leaves