Goldenrod Solidago canadensis
Native to Canada can grow to 1metre
Can be invasive (very) needs to be kept under control.
Bees love it also butterflies.
I need to clear it out occasionally but it always comes back.
It's insect attraction is it's saving grace...it also adds some height to the garden.
According to these links is a very useful herb too.
Botanical.com: A Modern Herbal by Mrs M Grieve
Plants For A Future: Database