The invasiveness of plant species varies greatly from area to area. It also varies from variety to variety. Add to this the differences in locations and you get lots of "if's, and's and maybe's". So many people on this forum have their own personal experiences but those experiences may not apply to other areas. Read lots of posts and then ask local experts their opinions.

I'm of the opinion that we are better off adding the species we want rather than just letting nature taking it's course.

Norm Kopecky