Dracocephalum
Dracocephalum rupestre

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Dracocephalum (dray-koh-SEF-uh-lum) (Info)
Species: rupestre (rue-PES-tree) (Info)

Category:

Alpines and Rock Gardens

Perennials

Height:

6-12 in. (15-30 cm)

12-18 in. (30-45 cm)

18-24 in. (45-60 cm)

Spacing:

12-15 in. (30-38 cm)

Hardiness:

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)

Sun Exposure:

Full Sun

Danger:

Unknown - Tell us

Bloom Color:

Blue-Violet

Bloom Time:

Mid Summer

Foliage:

Unknown - Tell us

Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:

Non-patented

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Regional

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

Leesburg, Virginia

Gardeners' Notes:

0
positives
1
neutral
0
negatives
RatingContent
Neutral

On Apr 2, 2007, bluespiral from (Zone 7a) wrote:

Although Hortus III gives the height of D. rupestre as 8-24 inches, this plant is elsewhere described as being a mat-forming, 10" x 10" or 12" x 15".

Hardy between zones 4 and 8

Native from West China and Mongolia

Blooms early to midsummer

Needs sun with some mid-day shade and good drainage

Is used as a tea substitute in China

"This plant is often sold [as] D. grandiflorum. One way to tell the two species apart is that the petioles of the middle cauline leaves are 2-6 cm long on the true D. grandiflorum - while D. rupestre has very short or no petioles."