General Plant Information (Edit)
Plant Habit: Shrub
Tree
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Dry Mesic
Dry
Soil pH Preferences: Strongly acid (5.1 – 5.5)
Moderately acid (5.6 – 6.0)
Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Minimum cold hardiness: Zone 8a -12.2 °C (10 °F) to -9.4 °C (15 °F)
Maximum recommended zone: Zone 10b
Plant Height: 2-30 feet
Plant Spread: 2-40 feet
Leaves: Evergreen
Fruit: Edible to birds
Other: 3-lobed hard, purple to brown nut-like capsule
Flowers: Showy
Fragrant
Flower Color: Blue
Purple
White
Bloom Size: Under 1"
Flower Time: Late winter or early spring
Spring
Late spring or early summer
Uses: Windbreak or Hedge
Erosion control
Flowering Tree
Dynamic Accumulator: Nitrogen fixer
Wildlife Attractant: Bees
Birds
Butterflies
Resistances: Deer Resistant
Drought tolerant

Image
Common names
  • California Lilac
  • Blueblossom
  • Blue blossom
  • Bluebrush
  • Blueblossom Ceanothus
  • Blue Brush
Botanical names
  • Accepted: Ceanothus thyrsiflorus
  • Synonym: Ceanothus thyrsiflorus var. repens

Photo Gallery
Location: Bea’s garden
Date: 2023-06-12
Location: My Garden, UK
Date: 2022-05-07
Location: Tossa de Mar, Spain | April, 2023 
Date: 2023-04-04
Location: Tossa de Mar, Spain | April, 2023 
Date: 2023-04-04
Location: My Garden, UK
Location: Winter in San Diego
Photo courtesy of: PDPhoto.org
Location: Blue blossom ceanothus (Ceanothus thyrsiflorus) on Point Reyes Fire Lane Trail
Date: 2010-05-14
Photo courtesy of: Miguel Vieira
Location: Blueblossom ceanothus (Ceanothus thyrsiflorus) on Mound Diablo Meridian Ridge Road
Date: 2010-04-28
Photo courtesy of: Miguel Vieira
Location: Blue blossom ceanothus (Ceanothus thyrsiflorus) on Point Reyes Fire Lane Trail
Date: 2010-05-14
Photo courtesy of: Miguel Vieira
Location: Blue blossom ceanothus (Ceanothus thyrsiflorus) on Point Reyes Fire Lane Trail
Date: 2010-05-14
Photo courtesy of: Miguel Vieira

Date: c. 1847
illustration from 'Annales de la société royale d'agriculture e
Location: Blueblossom ceanothus (Ceanothus thyrsiflorus) on Mount Diablo Bald Ridge Trail
Date: 2010-04-28
Photo courtesy of: Miguel Vieira
Location: Regional Parks Botanic Garden.
Date: April
photo by Stan Shebs
Location: Royal Botanical Garden of Madrid
photo credit: A. Barra
Location: Royal Botanical Garden of Madrid
photo credit: A. Barra
Comments:
  • Posted by Mindy03 (Delta KY) on Apr 22, 2012 2:20 PM concerning plant:
    Honey bees get nectar and pollen from this plant.
Plant Events from our members
Yorkshirelass On February 1, 2005 Plant Ended (Removed, Died, Discarded, etc)
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