I believe it is Rose of Sharon , hardy hibiscus

Here is a link that might be useful: info

also know as althea...

well known for its prolific seedlings..

is it a volunteer???

surprised it isnt listed as invasive in many areas

ken

check out confederate rose too, it's also a type of hibiscus -kinda the southern version of rose of sharon, not as hardy and dies back to the ground over winter.

Yes, this is confederate rose or similar. Rose of sharon produces different leaves and a different flowering habit.

Agreed, Hibiscus mutabilis, not syriacus. Not a native but not invasive. In spring, trim everything left (dead stalks/canes) to about a foot, maybe less, depending on what the crown is like. Old cane stumps trimmed in previous years can be knocked loose at this time.

thank you everyone