garjan
i think you are right, i thought so when it flowered but thought it was too early for it to be flowering. its probably the wild more invasive variety and i already have some bocking14 which is the non invasive variety. so not sure what i would do with it may be i will freecycle it, as i don't want to plant it then forget to deadhead it before it spreads its seed etc.
thanks again, any second opinions welcome :).