Mandarin: The Smallest of the Ancestral Citrus

The mandarin (Citrus reticulata) is one of only three true ancestral citrus species (the others being citron and pomelo). Native to southern China, it has been cultivated there for over 4,000 years. Tangerines and clementines are mandarin varieties — the entire small-easy-peel citrus family descends from the mandarin.

Origin and history

Native to southern China and Vietnam. Cultivation began at least 4,000 years ago. The name "mandarin" reflects the fruit's popularity at the imperial Chinese court — Mandarin officials wore robes the same orange color. Arab traders carried mandarins west to North Africa and southern Europe by the 1100s.

The tangerine and clementine

Tangerines are mandarins shipped historically through the Moroccan port of Tangier — the name simply marks the origin. Clementines are a 19th-century hybrid (mandarin × sweet orange), reportedly discovered by Father Clément Rodier in an orphanage garden in Algeria around 1902.

Where mandarins grow today

China is by far the largest producer. Spain, Turkey, Egypt, Morocco, Brazil, and the United States (California, Florida) follow.

How to grow mandarins

1. Climate: Subtropical. More cold-tolerant than oranges — hardy to -3°C briefly. USDA Zones 9-11.
2. Soil: Well-drained loam, pH 6.0-7.0.
3. Sun: Full sun.
4. Pollination: Most are self-fertile.
5. Spacing: 4m for standard; 2m for dwarf.
6. First fruit: 2-3 years from a grafted dwarf.

Bottom line

Easy peel, sweet, kid-friendly, and one of the easiest fruit trees in subtropical horticulture. Plant a Satsuma or Clementine and you have winter fruit for the next 30 years.