Mine all flower prolifically (two forms), and frankly, never gave it a second thought because they seem so easy; too easy in fact... if they were not so ephemeral and summer dormant, they'd be a dang weed spreading far and wide... in fact I do think of it as weedy, but I do love the lush dissected spring foliage and wonderful flowers. They seem easy in almost any condition, but do best with shade in a nice humus soil.