Plant Profile: Physostegia virginiana

In the mint family, the obedient plant derives its name from the unique characteristic of its flowers, which can be bent into various positions and will remain in place. This plant can become invasive in fertile, moist soils, so it is advisable for gardeners to divide the clumps annually to keep them manageable and to remove any plants that encroach on other areas of the garden. It is an excellent option for meadows or native gardens, as it attracts bees, hummingbirds, and other pollinators.

The flowers, measuring about 1 inch, range in color from pale purple to rose and are arranged on an eye-catching terminal spike. The corolla features a swollen throat, with a domed upper lip and a lower lip that spreads into three lobes. In rich soils, shaded areas, or during hot weather, the stems may droop, necessitating the staking of taller plants. The flowering process begins at the base of each spike and progresses upward.

Obedient plants thrive in moist, well-drained, moderately fertile soil and prefer full sun to partial shade. In their natural habitat, they can be found in wet meadows, barrens, glades, seepages in open woodlands, and damp thickets, among other locations. They can also grow in open upland forests, provided the soil has a high pH. In the mountains of North Carolina, they are considered uncommon to infrequent. Propagation can be achieved through seeds or by dividing the roots in spring.

Potential issues include susceptibility to blackspot fungal disease.