These plants have been growing in full sun in my front yard since the spring and are now starting to flower. The stems are purple/ brown and the flowers are purple. I'm not sure if the flowers will get bigger if given more time. My main concern is if it's native or non native. I will start weeding on Tuesday and want to know if I should pull this out or let it grow. I'd like to get rid of it before it goes to seed especially if it's invasive here. Thanks
