Physostegia virginiana obedient plant
This long-blooming, spreading herbaceous perennial grows 2' - 3' tall by 2' wide, with white racemes of tubular flowers in mid-summer. The flowers are on swivels that can be moved around to the right or left on the stem, giving rise to the common name of obedient plant. Plants spread readily by means of rhizomes forming large colonies leading some to say it is not terribly obedient. But it is a tough plant and a good performer if large drifts are wanted.