Variety profile

Washington Navel Orange

(Citrus sinensis 'Washington Navel')

Documented by Léo — grown in the ground, USDA zone 8b

Washington Navel orange (Citrus sinensis 'Washington Navel') is the most widely grown navel orange in the world, a natural mutation that appeared in Brazil in the early 19th century and was introduced to Washington in 1870, hence its name. Its tree hardiness reaches 16°F (−9°C), making it suitable for in-ground growing in USDA zones 8b and 9a. The vigorous tree commonly reaches 10 to 16 ft (3 to 5 m) in cultivation, and can reach 20 ft (6 m) in favorable ground, with a rounded habit, evergreen foliage, and fragrant white flowers in spring. Its large bright orange fruit, 7.1 to 10.6 oz (200 to 300 g), characterized by a visible secondary navel, seedless, with easy-to-peel skin, ripen in winter and offer juicy, sweet, fragrant flesh. The ultimate table orange: to be eaten fresh, as juice pressed right away (it oxidizes quickly), in salad. Graft onto Poncirus trifoliata for in-ground growing, plant against a south wall. Harvest in January-March.

Orange citrus fruit on leafy branches
AI-generated illustration. It does not authenticate cultivar identity or cold tolerance.
Cold hardiness 16°F (−9°C)

Identity

OriginBrazil (Bahia), naturalized in California
Genetic originSpontaneous mutation of sweet orange (Citrus sinensis)
USDA zone
Cold hardiness16°F (−9°C)
Fruit cold hardiness28°F (−2°C)
GrowthVigorous
Height20 ft (6 m)
HarvestJanuary, February, December
SeedsSeedless
FlavorsVery sweet, Highly aromatic, Balanced

History & Description

Origin

Washington Navel orange is the most widely grown sweet orange variety in the world, native to Brazil, where it was discovered around 1820 as a spontaneous mutation in the Franciscan convent of Bahia. In 1870, the U.S. Department of Agriculture introduced trees to Washington, before distributing them a few years later to Riverside, California, a region that would become the cradle of navel orange production in the United States. The name Navel, meaning belly button, refers to the rudimentary floral bud visible at the end opposite the stem. The variety was named Washington in homage to the American capital and quickly became the world reference for the table orange. Its cultivation then spread to Spain, Morocco, Australia, and South Africa. In France, it is prized by enthusiasts for the exceptional quality of its winter fruit, which ripens when other fruit trees are dormant.

Tree description

Washington Navel orange is a vigorous tree able to reach 13 to 20 ft (4 to 6 m), with an upright habit and a dense, well-rounded crown. Its dark green, glossy evergreen foliage is decorative all year. The abundant, intensely fragrant spring bloom produces the famous orange blossoms with relaxing properties. Growth is vigorous, especially in young trees well established in the ground.

Fruit quality

Washington Navel orange is a large round to slightly oval fruit, weighing from 7.1 to 12.3 oz (200 to 350 g), with thick, bright orange, easily peeled skin. The flesh is dark orange, melting, very juicy, and deliciously sweet. It is completely seedless thanks to the variety's natural pollen sterility. The harvest comes from December to February, in the heart of winter, when the fruit reaches perfect flavor maturity.

Flavor and ornamental interest

Washington Navel orange is eaten above all as a table fruit, its sweetness and juiciness making it one of the most appreciated oranges in the world. It also gives an excellent juice, to be drunk quickly to avoid the bitterness due to limonin. Its intensely fragrant zest is valuable in pastry, jam, and cooking. Its large white flowers with an intoxicating scent are traditionally harvested for perfumery and infusions. Ornamentally, its bright orange fruit contrasting with the dark green foliage make it a remarkable tree for sheltered zone 8b gardens.
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What matters when choosing

Key points about Washington Navel Orange

Washington Navel is the classic eating orange: large, seedless, richly flavored, and easy to peel. It is excellent fresh but less suitable for stored juice, which can develop bitterness, and the tree remains sensitive to hard freezes.

Why choose it

  • Seedless, easy-to-peel fruit.
  • Rich flavor for fresh eating.
  • Ripe fruit holds well on the tree.

Its limits

  • Poorly suited to stored juice because of delayed bitterness.
  • Tree of moderate vigor.
  • Low tolerance of severe freezes.

Practical notes

Historical synonym
Bahia
Harvest at UCR
November through January
Use
Fresh-eating orange

Cold-hardiness reference: about 16°F (−9°C)

Tolerance depends strongly on freeze duration, wood hardening, and rootstock; this is not an orange to recommend without protection in a cold zone.

Sources and method

The temperatures given are reference points for a mature tree with hardened wood. The table and callout repeat the same value as the profile. They guarantee neither freedom from damage nor a harvest after a freezing event.

Data reviewed on September 21, 2026.

"Growing rare citrus means accepting that nature has the last word, while whispering in its ear how to survive the winter."

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