SelecTree: Tree Detail
Photo Locations: Cal Poly State University - San Luis Obispo, CA, Swanton Pacific Ranch - Davenport, CA and Tilden Regional Parks Botanical Garden - Berkeley, CA
Utility friendly tree.
One of the hardiest ceanothus for inland valley and foothill areas. Also white flowered variety 'Snow Flurry'.
Has fragrant Flower.
Native to California.
Additional Common Names
BLUE BLOSSOM, BLUEBRUSH
Oval or Rounded Shape.
Has Evergreen foliage.
Height: 5 - 20 feet.
Width: 5 - 20 feet.
Growth Rate: 24 to 36 Inches per Year.
Longevity Less than 50 years.
Leaves Oblong, Glossy Medium to Dark Green, No Change, Evergreen.
Flowers Showy. Fragrant Blue. Flowers in Spring.
Black or Purple Capsule, Small (0.25 - 0.50 inches), fruiting in Winter or Summer.
Bark Dark Brown or Red Brown, Scaly or Smooth.
Shading Capacity Rated as Moderately Dense in Leaf.
Tree Site Conditions & Constraints
Sunset Zones 5 - 9 and 14 - 24.
USDA Hardiness Zones 8 - 10.
Exposure Full Sun to Partial Shade.
Moist to Dry and Well Drained Soil.
Loam or Sand Texture.
Highly Acidic to Slightly Alkaline Soil pH.
Seaside Tolerance is Good in Moderate Zone.
Pests & Disease Information
Resistant to Verticillium. Susceptible to Aphids, Crown Rot, Fusarium, Armillaria, Phytophthora and Root Rot.
Health, Safety & Environmental Concerns
Branch Strength Rated as Medium.
Root Damage Potential Rated as Low.
Allergy Health Hazard.
Biogenic Emissions considered Moderate.
Fire Resistance is Favorable.
Attracts Birds and Bees.
Special Uses & Values
Cite this tree:
SelecTree. "Ceanothus thyrsiflorus Tree Record." 1995-2019. Feb 23, 2019.
< https://selectree.calpoly.edu/tree-detail/ceanothus-thyrsiflorus >
SelecTree Nursery Connection Map
Cal Poly / ESRI