SelecTree: Tree Detail
Photo Locations: Palo Alto, CA, Cal Poly Campus - San Luis Obispo, CA and Santa Barbara City College
Resistant to oak root fungus. Smog tolerant. Pods used to make chocolate-like substance.
Has Unpleasant Flower and Pollen fragrance.
Native to the Eastern Mediterranean Region.
Trees may be referred to as male or female.
A Ceratonia siliqua in Los Angeles is registered as a California Big Tree. It measures 52 feet high, with a trunk circumference of 185 inches and a crown spread of 62 feet.
Additional Common Names
CAROB TREE, ST. JOHN'S BREAD
Spreading with a Low Canopy.
Rounded or Umbrella Shape.
Has Evergreen foliage.
Height: 30 - 40 feet.
Width: 30 - 40 feet.
Growth Rate: 24 Inches per Year.
Longevity Greater than 150 years.
Leaves Pinnately Compound Even, Glossy Dark Green, No Change, Evergreen.
Unpleasant Flower Fragrance. Red. Flowers in Spring. Has either male or female flowers (dioecious). Trees may be sold as male or female.
Prolific, Brown Pod, Very Large (Over 3.00 inches), fruiting in Summer or Fall Edible.
Bark Dark Brown, Scaly.
Shading Capacity Rated as Very Dense in Leaf.
Litter Issue is Dry Fruit.
Tree Site Conditions & Constraints
Sunset Zones 9, 13 - 16 and 18 - 24.
USDA Hardiness Zones 9 - 11.
Exposure Full Sun to Partial Shade.
Moist to Dry Soil.
Clay, Loam or Sand Texture.
Slightly Acidic to Highly Alkaline Soil pH.
Salinity Tolerance is Moderate Inland and Good on Coast.
Seaside Tolerance is Good in Mild Zone and Medium in Moderate Zone.
Pests & Disease Information
Susceptible to Armillaria and Root Rot.
Health, Safety & Environmental Concerns
Branch Strength Rated as Medium.
Root Damage Potential Rated as High.
None Known Health Hazard.
Biogenic Emissions considered Moderate.
Fire Resistance is Favorable.
Special Uses & Values
Cite this tree:
SelecTree. "Ceratonia siliqua Tree Record." 1995-2019. Nov 22, 2019.
< https://selectree.calpoly.edu/tree-detail/ceratonia-siliqua >
SelecTree Nursery Connection Map
Cal Poly / ESRI