Photo by Melody

PlantFiles: Bluebeard, California Lilac, Autumn Blue Spiraea
Caryopteris incana

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Caryopteris (kar-ee-OP-ter-iss) (Info)
Species: incana (in-KAN-nuh) (Info)

Synonym:Caryopteris mastacanthus
Synonym:Caryopteris tangutica

3 vendors have this plant for sale.

9 members have or want this plant for trade.


36-48 in. (90-120 cm)

4-6 ft. (1.2-1.8 m)

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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun

Unknown - Tell us

Bloom Color:
Medium Blue

Bloom Time:
Mid Spring
Late Spring/Early Summer
Mid Summer


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

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
From semi-hardwood cuttings
From hardwood cuttings
By simple layering
By air layering

Seed Collecting:
Collect seedhead/pod when flowers fade; allow to dry
Allow pods to dry on plant; break open to collect seeds

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By Terry
Thumbnail #1 of Caryopteris incana by Terry

By mrs_colla
Thumbnail #2 of Caryopteris incana by mrs_colla

By mrs_colla
Thumbnail #3 of Caryopteris incana by mrs_colla

By mrs_colla
Thumbnail #4 of Caryopteris incana by mrs_colla

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Thumbnail #6 of Caryopteris incana by chunghsia

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Thumbnail #7 of Caryopteris incana by dawndoll2

There are a total of 9 photos.
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3 positives
1 neutral
No negatives

Gardeners' Notes:

Positive SteveLloyd941 On Sep 8, 2008, SteveLloyd941 from Frederick, MD wrote:

I've got four Caryopteris Chanodensis and they are beautiful in late summer when everything else starts to get brown and bedraggled. Three of these are from a local nursery and were already two years old. They are in an eastern exposure where they get sun until rounghly noon. The fourth was purchased from Spring Hill and took two years to amount to anything. However, it is exposed to the sun virtually all day and has a deeper blue color and a more symmetrical shape than the other three. They do, indeed, seem to thrive in dry conditions. I reccomend them highly -- very easy to care for.

Positive ArianesGrandma On Dec 30, 2007, ArianesGrandma from Yorkville, IL (Zone 5b) wrote:

MY plant DID grow "TRUE" from SEED. I collected them from MY Plants before I moved and put them in the ground of my new home. That same year I had Caryopteris Growing Just like the original plant I had left behind. I have NEVER Purchased one since I moved here and my is growing GREAT from SEEDS... Smells heavenly and looks Just like the one I left behind!

Positive pokerboy On Mar 24, 2005, pokerboy from Canberra
Australia (Zone 8b) wrote:

This plant has unusual blue flowers and I have found it to be quite drought tolerant, even in LARGE tubs. pokerboy.

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

Parent to the more widely grown Caryopteris x clandonensis, a blue flowering shrub for zones 6 and warmer. In colder climates, it may be grown as an herbaceous perennial. Blue flowers attract bumblees and provide intense blue color late in the season.

A weeping form is available.


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

Castro Valley, California
Davis, California
Richmond, California
San Anselmo, California
Santa Clara, California
Yorkville, Illinois
Frederick, Maryland
Averill Park, New York
Poughkeepsie, New York
Murfreesboro, Tennessee

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