Obedient Plant 100 Seeds Physostegia virginiana

Physostegia virginiana—commonly known as obedient plant—typically grows as an upright, clump-forming perennial reaching about 2 to 4 feet in height (approximately 24 to 48 inches tall) and spreading 1 to 3 feet wide (12 to 36 inches). Its square stems support lance-shaped leaves that usually measure 3 to 6 inches long and about ½ to 1 inch wide, arranged oppositely along the stem. The showy flower spikes can extend 6 to 12 inches in length, composed of tubular, snapdragon-like blossoms that are each about 1 to 1½ inches long. Individual flowers are densely packed along the spike and can be gently repositioned—hence the name “obedient plant.” The root system spreads through rhizomes, allowing colonies to expand over time, sometimes reaching several feet across if left unmanaged. Overall, this species forms a moderately dense vertical accent in gardens, with flowering stems rising above the foliage and maintaining a relatively narrow but spreading footprint in imperial dimensions.