Navel oranges trace back to a single mutant tree that appeared in Bahia, Brazil, likely in the late 1700s or early 1800s. Every navel orange you’ve ever eaten descends from that one genetic accident. The mutation caused the fruit to grow a small, undeveloped second orange at its base, nestled inside the peel of the primary fruit. That little formation pushes outward slightly, creating the belly-button shape that gives the orange its name.
The Original Mutation in Brazil
The navel orange arose as a spontaneous bud mutation on a Seleta orange tree in the Bahia region of northeastern Brazil. No one recorded the exact date, but the earliest written reference comes from 1802, when a Portuguese official named Vilhena wrote to the kingdom of Portugal noting that the “orange de umbigo” (navel orange) in Bahia was bigger and juicier than anything grown in Portugal. Based on this and other early references, researchers estimate the mutation first appeared sometime around the late 1700s.
A Portuguese gardener living in Cabula, a neighborhood in Salvador (the capital of Bahia state), is credited with first propagating the trees. From there, the variety spread locally, and word of this unusual seedless orange eventually reached other countries.
How Navel Oranges Reached the United States
In 1870, a Presbyterian missionary named F.I.C. Schneider shipped budded navel orange trees from Brazil to the United States. The trees ended up in the hands of William Saunders, the USDA’s first botanist and landscape designer, who began experimenting with them in Washington, D.C.
A California pioneer named Eliza Lovell Tibbets convinced Saunders to send her two of the young trees so she could test them in Riverside, California. They arrived by rail and horse-drawn wagon, and Tibbets planted them at her home in 1873. The warm, dry climate of Southern California turned out to be nearly perfect for producing deeply colored, flavorful fruit. Those two trees launched what the USDA later called “the most successful experiment” of Saunders’s career, and what others nicknamed California’s second gold rush.
One of the original parent trees survived until 1922. A commemorative plaque placed in 1920 honored Tibbets for planting “the first Washington navel orange trees in California, native to Bahia, Brazil, proved the most valuable fruit introduction yet made by the United States Department of Agriculture.”
Why They’re Seedless (and What That Means)
The same mutation that created the navel structure also made these oranges seedless. Navel oranges develop through a process called parthenocarpy, where the fruit grows without fertilization. In most fruits, pollination triggers a cascade of plant hormones, particularly auxins and gibberellins, that tell the ovary to develop into a fruit with seeds inside. In navel oranges, the ovary develops into fruit on its own, skipping that step entirely. The result is a fruit with no seeds.
This is great for eating but creates an obvious problem: you can’t plant a navel orange seed, because there are none. Every navel orange tree in the world is propagated by grafting. Growers cut a branch (called a scion) from an existing navel orange tree and attach it to the rootstock of another healthy citrus tree. The scion fuses with the new root system and produces seedless navel oranges. This means every navel orange tree alive today is genetically identical to that original mutant tree in Bahia, essentially a clone passed forward for over two centuries.
Where They Grow Today
Brazil remains the world’s largest orange producer by a wide margin, accounting for about 29% of global production with 13.5 million metric tons in the 2025/2026 season. China follows at 17% (7.68 million metric tons), and the European Union rounds out the top three at 12% (5.64 million metric tons). Total global orange production sits at roughly 46 million metric tons per year. These figures cover all orange varieties, but navel oranges represent one of the most commercially important types worldwide.
In the United States, California is the dominant navel orange state. The variety thrives in the state’s dry, warm growing regions, particularly the Central Valley and inland Southern California. Florida also grows navel oranges, though its humid climate is better suited to juice varieties like Valencia oranges. Florida’s navel harvest runs from November through February, while California’s season typically stretches from November into spring, peaking during winter months.
Navel Oranges vs. Valencia Oranges
If you’ve ever wondered why some oranges are labeled “navel” and others “Valencia,” the differences are straightforward. Navel oranges are seedless, easy to peel, and have that distinctive belly-button formation. They’re considered one of the best eating oranges. Valencia oranges have thinner skin, higher juice content, and a few seeds. Valencias are the go-to orange for juice production, while navels are the ones you want to peel and eat by hand.
Navel oranges also contain a compound called limonin that turns the juice bitter shortly after squeezing, which is another reason they’re better eaten fresh than juiced.
Notable Navel Varieties
The original navel orange, often called the Washington navel, spawned additional mutations over the years. The most popular offshoot is the Cara Cara navel, discovered in 1976 at Hacienda Cara Cara in Venezuela growing on a Washington navel tree. Cara Caras have pinkish-red flesh (sometimes compared to grapefruit) and a noticeably sweeter, slightly berry-like flavor compared to standard navels. Like their parent, they’re seedless and easy to peel.
Other navel varieties include the Lane Late (a later-maturing type that extends the harvest season) and the Fukumoto (an early-season variety with deep reddish-orange rind). All of them trace their genetics back to that single tree in Bahia.