Hibiscus laevis (Halberd-leaved Rose Mallow)
These flowers are currently blooming in Lilydale Park in St. Paul at the East end of the park along Lilydale road. They are a native perennial. I have seen humming birds feeding off of these very showey flowers.
To learn more about these flowers check out https://www.minnesotawildflowers.info/flower/halberd-leaved-rose-mallow