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island ceanothus
Scientific Name: Ceanothus megacarpus var. insularis
Family: Rhamnaceae
Category: Dicot
Growth: Shrub
Duration: Perennial
Other Names:
Island Ceanothus (Ceanothus arboreus)
Common Names
- Tree Lilac
- Island Mt. Lilac
- Feltleaf Ceanothus
- Catalina Ceanothus
- Island Ceanothus
Considerations for Pets
- The plant produces little berries.
Taxonomy and Nomenclature
- Scientific Name: Ceanothus arboreus E. Greene
- Family: Rhamnaceae (Buckthorn family)
- Genus: Ceanothus L.
- Synonyms:
- Catalina Ceanothus
- Felt-leaf Ceanothus
- Island Ceanothus
- Taxonomic Rank: Species
- Related Taxa:
- Ceanothus megacarpus Nutt. – bigpod ceanothus
- Ceanothus megacarpus var. insularis (Eastw.) Munz – island ceanothus (Synonym of Ceanothus megacarpus var. insularis)
Distribution and Habitat
- Endemic to California, especially the Channel Islands.
- Specifically found on Santa Cruz, Santa Rosa and Catalina Islands.
Morphological Characteristics and Growth Habits
- Grows fast, reaching 20-30 feet in height at maturity. Can be trained as a small tree.
- Considered one of the largest growing species of Ceanothus, capable of reaching 15-20 feet.
- Has large, dark green leaves.
- Produces medium blue flowers in 6-inch spikes. Some cultivars have deep blue flowers.
Cultivars and Hybrids
- Ceanothus 'Owlswood Blue' is a C. arboreus hybrid with smaller, thicker leaves and deep blue flowers.
- 'Trewithen Blue' is a cultivar of Ceanothus arboreus.