Ceanothus, California Lilac 'Dark Star'


Family: Rhamnaceae
Genus: Ceanothus (see-an-OH-thus) (Info)
Cultivar: Dark Star



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Where to Grow:

Unknown - Tell us


4-6 ft. (1.2-1.8 m)


4-6 ft. (1.2-1.8 m)


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

Sun to Partial Shade


Unknown - Tell us

Bloom Color:

Dark Blue


Bloom Time:

Late Winter/Early Spring

Mid Spring



Other details:

Unknown - Tell us

Soil pH requirements:

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us


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

Canoga Park, California

Crescent City, California

Crockett, California

Forest Falls, California

Los Angeles, California

Merced, California

North Fork, California

Rancho Palos Verdes, California

Richmond, California

San Leandro, California

San Rafael, California

Walnut Creek, California

Winchester, California

Portland, Oregon

Bellevue, Washington

East Port Orchard, Washington

Seattle, Washington

Vancouver, Washington (2 reports)

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Gardeners' Notes:


On Oct 26, 2015, botfeeder from Vancouver, WA wrote:

This ceanothus is the one I find the prettiest- vivid blue flowers and and I like the way it branches.

They say here zone 9 but I believe that is incorrect- nurseries show ceanothus as being good to zone 7 or 8. I am in zone 8 and it dipped to 9F a couple of winters back and my darkstar did not get damaged.

Ceanothus do seem to be very drought tolerant. I have a couple of the Victoria variety in a corner of a big asphalt area in front of a retaining wall, that spot gets incredibly dry in summer and I did not water those all summer, and they are still green.

I have planted a bunch of them and the ones in shadier spots haven't grown super fast but the ones that have grown best have grown a ton in a short time. A couple I planted this spring I p... read more


On Jul 28, 2010, suewylan from North Fork, CA (Zone 7b) wrote:

Wonderful deep blue flowers in spring. Grows on a dry clay bank. Needed little water to establish.


On May 3, 2009, anelson77 from Seattle, WA wrote:

Fast growing and stunning in bloom. So far has thrived everywhere I have planted it--does not seem fussy about soil. Does not need summer water. Attractive to bees. Give it room to grow if you dont want to be constantly pruning.


On Aug 22, 2004, pokerboy from Canberra
Australia (Zone 8b) wrote:

Great low care shrub. I like the abundance of blue flowers. Prune after flowering to maintain a compact shape. Very drought tolerant. pokerboy.


On Apr 6, 2004, Melinda56 wrote:

I love my neighbor's Ceanothus bush so much that I've planted one of my own. We're in Seattle, and this bush does very well. As another gardener noted, bees just love it--but they're so engrossed in exploring the bush that they never bother people nearby.
My only concern is that I want to keep mine pruned to a nice round shape, rather than letting it grow into a tree, as I've seen around town.


On Jun 1, 2003, lauburt from Vancouver, WA wrote:

This is a wonderful shrub, but don't put it in front of a window unless you want to trim it 6-8 times a year! A very fast grower and extremely drought tolerant. Not picky about soil either.

Warning: Every bee in the neighborhood will be at your house when it blooms, so don't put it by the door!


On Mar 7, 2003, Kelli from L.A. (Canoga Park), CA (Zone 10a) wrote:

I like the color and abundance of the flowers.