SelecTree: Tree Detail
ORANGE
Citrus sinensis
Photo Locations: San Diego Botanic Garden - Encinitas, CA, Sacramento, CA, San Antonio Botanic Garden - San Antonio, TX, Stanford University - Palo Alto, CA and Alice Keck Park Memorial Garden - Santa Barbara, CA
General Notes
Needs good drainage. 'Washington' navel and 'Valencia' are common varieties. Citrus grafted to sour orange root stock is resistant to texas root rot.
Has fragrant Flower.
Native to Southeastern Asia.
A Citrus sinensis in Capital Parkway #120 is registered as a California Big Tree. It measures 43 feet high, with a trunk circumference of 61 inches and a crown spread of 35 feet.
Family: Rutaceae
Tree Characteristics
Compact and Erect or Spreading with a Low Canopy.
Rounded, Umbrella or Vase Shape.
Has Evergreen foliage.
Height: 20 - 30 feet.
Width: 15 - 25 feet.
Growth Rate: 24 Inches per Year.
Longevity 50 to 150 years.
Leaves Ovate, Glossy Medium to Dark Green, No Change, Evergreen.
Flowers Showy. Fragrant Pink or White. Flowers in Spring. Has perfect flowers (male and female parts in each flower).
Prolific, Orange, Red or Yellow Hesperidium, Very Large (Over 3.00 inches), fruiting in Fall, Winter, Spring or Summer Edible and Wildlife use it.
Bark Black or Dark Brown, Smooth.
Shading Capacity Rated as Dense in Leaf.
Litter Issue is Wet Fruit.
Tree Site Conditions & Constraints
Sunset Zones 8, 9 and 12 - 24.
USDA Hardiness Zones 9 - 11.
Exposure Full Sun.
Moist Soil.
Clay, Loam or Sand Texture.
Highly Acidic to Highly Alkaline Soil pH.
Seaside Tolerance is Good in Mild Zone.
Pests & Disease Information
Resistant to Verticillium. Susceptible to Aphids, Mealy Bugs, Scales, Spider Mites, Thrip and White Fly, Brown Rot, Chlorosis, Crown Rot, Armillaria, Phytophthora, Root Rot, Sooty Mold and Virus.
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.
Desirable Wildlife Plant.
Attracts Bees and Squirrels.
Wildlife use Fruit.
Special Uses & Values
Screen.
Espalier or Hedged.
Cite this tree:
SelecTree. "Citrus sinensis Tree Record." 1995-2018. Jun 24, 2018.
< https://selectree.calpoly.edu/tree-detail/citrus-sinensis >
SelecTree Nursery Connection Map
Cal Poly / ESRI