Obedient plant spreads by rhizomes and forms colonies, an attractive soil stabilizer. Jennifer Anderson @ USDA-NRCS PLANTS Database
Physotegia virginiana features pink snapdragon-like flowers with narrow, lance-shaped foliage. If the flowers are pushed in any direction, they will temporarily remain in the new position, giving the plant its common name, obedient plant.
While pretty, this plant can be a rampant, aggressive spreader. It should be monitored to make sure it does not become invasive in the garden. Plants spread by rhizomes and can form large colonies.
Grows best in moist to wet soils in full sun to part shade.
For more information on this plant, visit the USDA PLANTS Database: http://plants.usda.gov/java/profile?symbol=PHVI8