Photo by Melody

PlantFiles: Blue Mist Spiraea
Caryopteris divaricata

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Caryopteris (kar-ee-OP-ter-iss) (Info)
Species: divaricata (dy-vair-ih-KAY-tuh) (Info)

One vendor has this plant for sale.

3 members have or want this plant for trade.


4-6 ft. (1.2-1.8 m)

36-48 in. (90-120 cm)

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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Full Sun


Bloom Color:
Dark Blue

Bloom Time:
Late Summer/Early Fall
Mid Fall


Other details:
Average Water Needs; Water regularly; do not overwater
This plant is attractive to bees, butterflies and/or birds

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By notmartha
Thumbnail #1 of Caryopteris divaricata by notmartha


1 positive
1 neutral
No negatives

Gardeners' Notes:

Positive SuzanneRB On Sep 30, 2009, SuzanneRB from Blue Bell, PA wrote:

I bought this plant a few years ago at a 'community day' plant sale - what a terrific find!!
Easy to grow , propgates self from root shoots, lovely light greyish leaves, medium blue flowers in late summer/early.

Neutral Terry On Sep 14, 2001, Terry from Murfreesboro, TN (Zone 7a) wrote:

As with other species, C. divaricata may be grown as an herbaceouso perennial in colder climates. Not as common as Caryopteris x clandonensis, this cultivar sports very dark blue flowers in late summer.


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

Broomfield, Colorado
Maben, Mississippi
Blue Bell, Pennsylvania
Mc Kees Rocks, Pennsylvania

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