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Blueblossom Wikimedia Commons
Rhamnaceae

Blueblossom

Ceanothus thyrsiflorus

California spirit.

Family
Rhamnaceae
Genus
Ceanothus
Native to
Western North America, California, Oregon
Bloom season
Spring
Type
evergreen shrub
Height
6-15 ft
Sunlight
full sun
Soil
Well-drained, poor to moderate fertility
Water
low
Hardiness
8-10
Lifespan
perennial

Did you know

  • Blueblossom is sometimes called 'California lilac' despite being unrelated to true lilacs.
  • The plant has nitrogen-fixing root nodules, allowing it to thrive in poor soils and improve them for neighboring plants.
  • When in full bloom, a blueblossom shrub hums audibly with the thousands of bees visiting its tiny flowers.
  • Ceanothus flowers produce a natural soap-like lather when crushed with water, and Native Americans used them for washing.
  • Blueblossom is the tallest species of Ceanothus, sometimes growing into a small tree up to 20 feet tall in coastal areas.

Color meanings

0

freedom

1

natural beauty

2

independence

Uses

  • native plant gardens
  • erosion control
  • drought-tolerant landscaping