species 233 observations
Lakeside Ceanothus
Ceanothus cyaneus
Field notes
Ceanothus cyaneus is a species of flowering shrub in the genus Ceanothus known commonly as the San Diego buckbrush and Lakeside ceanothus. This species is found in the Peninsular Ranges of San Diego County, California, and known from one occurrence in Baja California. It is characterized by brilliant blue flowers, glossy green foliage, and is regarded as one of the most beautiful members of the genus.
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Caterpillars
Moths and butterflies raised on it



Ceanothus Stem Gall Moth, California Tortoiseshell, Pacuvius Duskywing, Pale Swallowtail
36
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Hosted animals
Gall makers, leaf miners and other animals living on or in it

Ceanothus Bud Gall Midge, Pacific Flat-Headed Borer
2
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Plant eaters
Animals that feed on it


Margined Calligrapher, White-bowed Smoothwing, Common Grass Skimmer, Western Yellowjacket
16
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Flower visitors
Pollinators and other flower visitors



Black-tailed Bumble Bee, Yellow-faced Bumble Bee, Echo Azure, Oblique Streaktail
51
Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Key traits
- Layer
- Shrubs
From USDA PLANTS.