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Koji orange

Citrus leiocarpa

Also called Sour Orange, Seville Orange, Bitter Orange, Bigarade, Guntur Sour Orange, Kichili, King Orange

Koji orange
Photo: fir0002 flagstaffotos [at] gmail.com Canon 20D + Canon 70-200mm f/2.8 L, GFDL 1.2

Koji orange is a small citrus tree native to Japan, now treated as a synonym of Citrus aurantium (sour orange). It is grown mainly as an ornamental or for its small, seedy fruit rather than for commercial use.

Family
Rutaceae (Citrus family)
Grows as
Tree
Light
Full sun
Water
Water deeply when the top few centimetres of soil are dry, and avoid waterlogging.
Soil
Well-drained, slightly acidic loam or citrus potting mix.
Temperature
15–30 °C; protect below 0 °C, as young trees are frost-tender.
How easy
Moderate
Safety
Not known to be toxic
Edible
Yes, some parts

About

Koji orange (コウジ) (Citrus leiocarpa), also known as the smooth-fruited orange, is a Citrus species native to Japan. The specific epithet (leiocarpa) comes from the Greek λεῖος leîos 'smooth', and καρπός karpós 'fruit'. It is a taxonomical synonym of Citrus aurantium.

Where it grows

Besides Japan, it is grown in the United States, and other parts of East Asia including South Korea and China.

Other Citrus plants

Calamansi · Citrofortunella · Nasnaran Mandarin · Ada Jamir · Key lime · Bitter orange · Bergamot orange · Ichang Lemon or Ichang papeda · Celebes papeda · Clementine · Heen naran · Daidai

Text excerpted from the Wikipedia article Koji orange by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

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