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Obedient Plant, False Dragonhead
Scientific Name: Physostegia virginiana (L.) Benth.
Synonym: Physostegia speciosa, Physostegia formosior, Dracocephalum formosius, Physostegia denticulata, Dracocephalum denticulatum, Dracocephalum virginianum
Family: Lamiaceae
Obedient Plant, False Dragonhead (Physostegia  virginiana)
Dracocephalum virginianum, Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 116.
Recommended Temperature Zone:
sunset: All zones
USDA: 3-10

Sun Exposure: Full sun to part shade

Origin: Eastern North America from Canada to Florida, on prairies and stream banks

Growth Habits: Herbaceous perennial, 3 to 4 feet tall (90-120 cm), 2 to 3 feet spread (60-90 cm); narrow, lance-shaped leaves, up to 4 inches long (10 cm)

Watering Needs: Regular water, well drained soil

Propagation: Division, seeds, can be invasive

As Dracocephalum virginianum in Curtis Botanical Magazine

Cultural Practices:
Prune back in early spring, divide every other year to keep it vigorous.

Blooming Habits:
Pink to white, two-lipped flowers in summer.

Fruiting Habits:

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