I have Buddleia in my garden (which otherwise has a native focus). It's not at all invasive where I am, in upstate NY, probably due to the cold winters. In a

I have Buddleia in my garden (which otherwise has a native focus). It's not at all invasive where I am, in upstate NY, probably due to the cold winters. In a colder winter it dies back to the roots and may not survive at all. Now, purple loosestrife is still all over, despite the biocontrol. And don't get me started about Phragmites or Alliaria petiolata (garlic mustard).