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Creeping Blueblossom
Ceanothus thyrsiflorus var. thyrsiflorus

About Creeping Blueblossom (Ceanothus thyrsiflorus var. thyrsiflorus) Creeping Blueblossom (Ceanothus thyrsiflorus var. thyrsoflorus) is a the low growing form of Ceanothus thyrsiflorus of native tree or shrub that grows in coastal central and northern California, extending from Santa Barbara to near the Oregon border, growing 1- 5 miles from the shore. The other variety of this species, Ceanothus thyrsiflorus var. griseus (Carmel Ceanothus) is more variable in form, extends less into northern california, and sticks more closely to the coast.

Creeping Blueblossom has profuse attractive sky blue flowers and makes a great ground cover. It prefers full sun to part shade in its native cool coastal environment, and part shade to full shade if grown in hotter and drier inland areas. It tolerates occasional light summer water, but is still quite drought tolerant. It grows well in many different soil types, from clay to sand, and tolerates poorly draining and fast draining conditions.

This variety was previously called C. thyrsiflorus var. repens.
Plant Description
Plant Type

Max. Height
2 - 3 ft (0.6 - 0.9 m)

Max. Width
6 - 10 ft (1.8 - 3.0 m)

Mounding, Spreading

Growth Rate


Shiny green

Flower Color

Flowering Season
Spring, Winter

Native Status

Natural Setting
Site Type
Wooded slopes near the coast

Sun, Part Shade, Shade

Elevation ?
17' - 4811'

Annual Precip. ?
16.8" - 112.9"

Summer Precip. ?
0.17" - 1.93"

Coldest Month ?
43.3° F - 50.8° F

Hottest Month ?
57.1° F - 72.6° F

Humidity ?
0.01 vpd - 19.67 vpd

Soil Description
Tolerates sand or clay

Fast, Medium, Slow

Wildlife Attracted
Bees and other pollinators

Landscaping Information
Ease of Care
Moderately Easy

Water Requirement ?
Very Low
Extremely Low
Very Low
Moderate - High

Moderately Popular

Max. Summer Water ?
No Summer Water, 1x/month, 2x/month
No Summer Water
Keep moist

Common uses
Groundcovers, Bank Stabilization, Bird Gardens, Butterfly Gardens, Bee Gardens

Nursery Availability
Commonly Available

Other Names
Botanical Names
Ceanothus thyrsiflorus var. repens

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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