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Obedient Plant, False Dragonhead 'Alba'

Physostegia virginiana

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Physostegia (fy-so-STEEJ-ee-uh) (Info)
Species: virginiana (vir-jin-ee-AN-uh) (Info)
Cultivar: Alba



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us


18-24 in. (45-60 cm)


Unknown - Tell us


USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

Sun Exposure:

Full Sun


Unknown - Tell us

Bloom Color:

White/Near White

Bloom Time:

Mid Summer


Unknown - Tell us

Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing the rootball

From herbaceous stem cuttings

Seed Collecting:

Unknown - Tell us


This plant has been said to grow in the following regions:

Longmont, Colorado

Rockford, Illinois

Davenport, Iowa

Lineville, Iowa

Prospect, Kentucky

Grants Pass, Oregon

Norristown, Pennsylvania

Charleston, South Carolina

Springfield, Virginia

Oconomowoc, Wisconsin

show all

Gardeners' Notes:


On Jul 26, 2010, plloyd from Valley City, ND wrote:

Planted 1 Alba False Dragonhead about 6 years ago and it is located in sun all day long. It does not get water except for what Mother Nature provides and has since self-seeded 2 additional plants approximately 4 feet from the mother plant. Doesn't mind poor soil and no water. Love this plant!! It blooms for an exceedingly long time.


On May 18, 2008, MtnGardener from Longmont, CO (Zone 5a) wrote:

Very showy white flowers. It tolerates getting early morning sun and then none in the afternoon. It needs to be kept moist and wilts easily if the ground gets dry. I'm transplanting a bunch into the full sun, over 9 hours of sun a day, so we'll see what happens. Non invasive here and spreads very gradually. After 4 years the original plants have doubled their size. Very pretty plant