This is the third year since I put it in. When it goes to seed it does it fast. I kept trying to collect the seedpods to grind into cardamom, but that stuff falls fast and spreads far. It's completely taken over one section of flower bed -- although the daffodils are coming through just fine -- and starting to move into the next.

I've got to try to eradicate it in that second bed ... maybe. It's a reasonably attractive ground cover, and looks like it may crowd out the weeds I'd have to pull otherwise.