Yes, and I think Kurt helped me figure out last year that I have Bishop Weed (which BST caterpillars won't eat) rather than the E. marginata (which they like). Fortunately, it's contained in a small garden area between the side of the house and a walkway. I yank a lot of it up each year, but even so the other plants I've tried to put in that area (ferns, heuchera) are no match for it... it's pretty much a solid groundcover.
