Yes, if they like your damp area!
They are biennials, growing first year, flowering the second, so if you don't want more, don't let them seed or hoe in late summer the babies.
I love them, and have the woodland spot where they are welcome!
Over the brook, they are amongst my seedlings, so I always have to pay someone to pull them up. About 3 hrs work. I have them put the piles where I may want them to seed. This year they will go to new estate job.
