There are several large clumps of Physostegiavirginiana at Paulik Park in central Richmond. Its common name is Obedient Plant.
The name refers to the flowers, which can be swivelled on the stems, and remain in the changed position. Physostegia is in the Lamiaceae (mint family) and is native to central and eastern North America.
How to keep a large patch from toppling? A Paulik Park gardener has come up with an elegant solution.