I want to say Lysimachia clethroides - Gooseneck loosestrife. Debra can you take a pic from the side showing the leaf structure? Is this coming from under the neighbors fence again?

I think you’re right. I bbelieve she planted it and the regretted it.

Hope these pics help:

thanks

debra

I think just about everyone who plants it comes to regret it unless it's surrounded by concrete.

Yes a problem plant for sure, not suitable for a mixed border. It is also a beautiful plant. I keep looking for a spot not in the garden where it can be all by itself.