Tangerines trace their roots to what is now south-central China, where the broader citrus genus first appeared roughly 8 million years ago. The wild ancestors of modern tangerines grew in this region long before humans began cultivating them, and the fruit’s journey from Chinese forests to breakfast tables around the world is a story of slow domestication, long-distance trade, and a misleading name that points to the wrong continent.
Wild Beginnings in Southern China
Genetic research places the origin of all citrus species in south-central China. The oldest known members of the citrus family, including the trifoliate orange, are found there, making the region the genus’s birthplace. While other citrus fruits branched off into different corners of Asia (pomelos and citrons arose in the Himalayan foothills, and some wild limes evolved in Australia), mandarins stayed closer to home.
The wild mandarins that would eventually become today’s tangerines grew in areas around present-day Hunan province. A 2025 genomic study published in Genome Biology analyzed nearly 200 citrus genomes and concluded that the ancestors of modern cultivated mandarins diverged from wild populations in the Daoxian area of southern China roughly 500,000 years ago. During a warm interglacial period, melting glaciers helped these early mandarins spread into the Yangtze and Pearl River basins, where geographic isolation gradually shaped them into distinct varieties.
How Domestication Changed the Fruit
Wild mandarins were smaller, less sweet, and harder to peel than the tangerines you find in grocery stores. Over thousands of years of cultivation in China, farmers selected for the traits they valued most: bigger fruit, sweeter flesh, and loose skin that pulls away easily. Researchers have identified over 2,000 genes in regions of the genome that show signs of human selection during domestication. Many of these genes are involved in sugar transport and metabolism, which explains the jump in sweetness between wild and early cultivated varieties.
Fruit size came later. In more recently improved cultivars like the Satsuma mandarin, changes in plant hormone signaling networks led to noticeably larger fruits. This two-stage pattern (sweetness first, then size) mirrors what scientists see in the domestication of many other crops, where flavor was the initial draw and physical traits were refined over subsequent generations.
Four ancient cultivation groups formed the foundation of Chinese mandarin farming, including varieties like Hongju and Jiangan that are still grown today. These archaic cultivars represent some of the earliest steps in citrus domestication anywhere in the world.
Why a Chinese Fruit Has a Moroccan Name
The name “tangerine” has nothing to do with where the fruit originally came from. It derives from Tangier, the Moroccan port city on the Strait of Gibraltar. The word started as an adjective meaning “of or from Tangier” and was applied to mandarin oranges shipped through that port to European markets. The earliest known use in English dates to 1710 in Joseph Addison’s periodical The Tatler.
By the 1800s, the fruit was even given a scientific name reflecting this association: Citrus nobilis var. tangeriana. But the connection to Tangier was purely commercial. Mandarins had traveled westward from China along trade routes through Southeast Asia and eventually into North Africa, where the climate proved ideal for growing them. Tangier became a major export hub, and European buyers named the fruit after the place they got it from, not the place it was born.
Tangerines, Mandarins, and Clementines
The terminology around these fruits is genuinely confusing because the categories overlap. Scientifically, tangerines, mandarins, and clementines all belong to the species Citrus reticulata. The USDA classifies “mandarin,” “tangerine,” and “clementine” as approved common names for the same species. In everyday use, “mandarin” is the broadest term, covering the whole group of small, loose-skinned citrus. “Tangerine” typically refers to deeper-orange varieties with a slightly more tart flavor. Clementines are a specific horticultural variety, likely a hybrid between a sweet orange and a willowleaf mandarin, known for being seedless and very easy to peel.
Satsumas are a distinct cultivar that originated in Japan, prized for being cold-hardy and nearly seedless. Other popular varieties include the Dancy tangerine (one of the oldest American commercial types), the honey-sweet Kishu, and the Minneola tangelo, which is actually a cross between a tangerine and a grapefruit. The diversity is enormous, but they all trace back to those wild mandarin populations in southern China.
Arrival in the Americas
Tangerines reached the Western Hemisphere through a Major Atway, who first grew and cultivated them as a distinct crop in Palatka, Florida. He reportedly imported trees from Morocco. In 1843, Atway sold his groves to N. H. Moragne, whose name became attached to one of the earliest American tangerine varieties. Florida’s warm, humid climate suited the fruit well, and the state became the center of American tangerine production for over a century.
Today, California has taken over as the primary U.S. growing region, though American production is modest on the global scale. The USDA forecasts U.S. tangerine and mandarin production at just under 1 million metric tons for the 2025/26 season, a decline from the previous year’s bumper crop in California.
Where Tangerines Grow Today
China dominates global production by an overwhelming margin. The country is forecast to produce 27.1 million metric tons of fresh tangerines and mandarins in the 2025/26 season, with the top growing regions concentrated in Guangxi and Yunnan provinces, not far from where the fruit’s wild ancestors first grew. That single figure accounts for roughly 70 percent of the world’s entire supply of 38.4 million tons.
The next largest producers are far behind:
- European Union: 2.8 million tons, led by Spain and Italy
- Turkey: 2.2 million tons, with growing export demand
- Morocco: 1.15 million tons, maintaining the North African tradition that gave the fruit its English name
- South Africa: 1 million tons, increasingly focused on exports
The geography of tangerine farming has expanded enormously since the fruit left its Chinese homeland, but the center of gravity never really shifted. The same part of the world that gave rise to wild mandarins millions of years ago still produces the vast majority of the world’s tangerines today.