Physostegia, False Dragonhead, Obedient Plant 'Summer Snow'

Physostegiavirginiana

Family
Lamiaceae (lay-mee-AY-see-ee)
Genus
Physostegia (fy-so-STEEJ-ee-uh)
Species
virginiana (vir-jin-ee-AN-uh)
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Light Shade
Height
24-36 in. (60-90 cm)
Spacing
18-24 in. (45-60 cm)
Hardiness
USDA Zone 2a: to -45.5 °C (-50 °F)
USDA Zone 2b: to -42.7 °C (-45 °F)
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
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)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
Bloom Color
White/Near White
Bloom Time
Mid Summer
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
Patent Information
Propagation Methods
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Divernon, Illinois

Tracy, Iowa

Derby, Kansas

Takoma Park, Maryland

Geneva, Ohio

Norman, Oklahoma

Charleston, South Carolina

Sioux Falls, South Dakota

Falls Church, Virginia

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Featured Videos

Gardener's Notes:

2
positives
1
neutral
0
negative
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G
Harpersfield, OH (Zone 5a) | May 2010 | positive

The white Obedient Plant seems to truly be obedient, unlike the purple version; which is prolific. I bought both a white and a purple po...Read More

J
J
Divernon, IL (Zone 5b) | December 2009 | positive

Called obedient plant because the flowers, when manually moved sideways, retain the new position. The wild species is found in moist to ...Read More

B
Lakemont, GA (Zone 8a) | March 2007 | neutral

Tall 3' - Plant 14" apart. White flowers sparkle. 3'.

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