Blue ceanothus
Ceanothus caeruleus
Plant photos
1 photo · Select to enlarge
Pale flower cluster and leaves of Ceanothus caeruleus.
Neptalí Ramírez Marcial / Wikimedia Commons / CC BY 4.0
Photo details
Resized and converted to WebP. No content edits.
Source: File:Ceanothus caeruleus 422370730.jpg
Reviewed . The actual photograph, source identification and reuse license were reviewed. The image illustrates the source-identified plant; it does not verify measurements or pollinator ratings.
Common names
4 names · 3 languages- EnglishYour language
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- Blue ceanothus
Sources & name notes (3)
Names recorded in our plant catalogue and botanical sources, grouped by language. Usage can vary by region.
Catalogue language labels are reviewed separately from botanical source records.
Numbered references identify names recorded by an external source. Other names are from our plant catalogue.
Community-curated iNaturalist taxonomy. This is a common-name attestation, not an independent botanical determination.
Source records
- Chaquira — results[0].names[1]; taxon id 291294; Ceanothus caeruleus.
- Chaquirilla — results[0].names[2]; taxon id 291294; Ceanothus caeruleus.
GBIF aggregation of Catalogue of Life. The original upstream source was not independently inspected; this is a sourced vernacular-name attestation, not a botanical determination.
Source records
- Chaquira — results[0] at https://api.gbif.org/v1/species/3875440/vernacularNames?limit=1000&offset=0; taxonKey 3875440; sourceTaxonKey 295798094; Ceanothus caeruleus.
- Chaquirilla — results[1] at https://api.gbif.org/v1/species/3875440/vernacularNames?limit=1000&offset=0; taxonKey 3875440; sourceTaxonKey 295798094; Ceanothus caeruleus.
Community-curated iNaturalist taxonomy; common-name attestation, not an independent botanical determination.
Source records
- Chaquira — results[7].names[1]; taxon id 291294; Ceanothus caeruleus.
- Chaquirilla — results[7].names[2]; taxon id 291294; Ceanothus caeruleus.
- ceanot belasý — results[7].names[3]; taxon id 291294; Ceanothus caeruleus.
Source-backed information
Published observations for this plant. Each reference supports the information beside it.
- Taxonomy
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Ceanothus caeruleus is an accepted species in Catalogue of Life.
Taxonomic treatment in the August 2026 release; the catalogue record name is preserved.
Sources [1] - Botanical family
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Rhamnaceae
Family in the cited taxonomic treatment.
Sources [1] - Pollinator guidance
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RHS includes Ceanothus species in its Plants for Pollinators guidance.
Genus-level guidance, not a rating for this individual species or a particular cultivar. RHS planting guidance. Choose accessible flowers with pollen and nectar; reduced-resource and double-flowered forms may be unsuitable.
Sources [2] - Native range
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Mexico to C. America.
Explicit native locality records in Kew WCVP v16; introduced and doubtful distributions excluded. Continent conversion follows the documented geographic mapping.
Sources [3]
Who this plant supports
About this plant
Blue ceanothus (Ceanothus caeruleus) is a shrub. It flowers from July to September.
Sources and references
References for the information marked with source numbers on this page.
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Catalogue of Life
Ceanothus caeruleus — Catalogue of Life COL26.8
COL26.8 (2026-08-20). Contributing checklist: Synonymic Checklists of the Vascular Plants of the World. This is taxonomic evidence, not an independent ecological study.
Relevant sections
- Taxonomy: NameUsage.tsv line 5143722; ID RYPH; rank species; status accepted
- Botanical family: NameUsage.tsv line 5143722; ID RYPH; rank species; status accepted
Source checked on .
Source data licence: CC BY 4.0.
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Royal Horticultural Society
RHS Plants for Pollinators — Garden Plants
RHS planting guidance; applicable flower-form restrictions are retained. General recommendations do not measure local nectar or pollen production.
Supports: Pollinator guidanceRelevant sections
- Pollinator guidance: Page 2, column 1, entry Ceanothus species (top 457 pt)
Source checked on .
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Royal Botanic Gardens, Kew
Ceanothus caeruleus — Kew WCVP native distribution
Native distribution and taxonomic treatment from the official WCVP v16 export (4 June 2026). The link opens the corresponding POWO taxon. Source rows are retained in the native-range audit archive.
Supports: Native rangeRelevant sections
- Native range: WCVP v16; wcvp_names.csv lines 1341683; wcvp_distribution.csv native locality lines 1248201, 1248202, 1248203, 1248204, 1248205, 1248206, 1248207, 1248208, 1248209, 1248210, 1248211, 1248212
Source checked on .
Source data licence: CC BY 3.0.