No - its a clump forming perennial.

so where have mine all gone????????
they clumoed up over 3 years but this year was their first flower.

thanks bamboo :o)

They do go down very early, there is very little to see of mine, other than the label. Seed is dead easy if you want more.

I was wondering if they were summer-dormant in the UK, like mine are here. Mine, of course, go down around April.

ah not thought of that. should have done, call my self a biologist ha!!

Went and looked just, all that is left of mine are the dried flower stalks which I ought to have cut down, but not had the time or the inclination or the weather.