My Nemesis

I've discovered I've got some Rosebay Willow Herb which has self seeded in the front garden... whilst I like the flowers (as do the beetles, bees and butterflies) I will have to get rid of it before it goes to seed as I am very allergic to the cotton seeds that it emits every autumn. I end up wheezing and sneezing when they are flying around, so I'm afraid this plant has a death sentence hanging over it!