Onion

Allium cepa

  • Onion
  • Onion
  • Onion
  • Onion
  • Flower name
    Onion
  • Scientific name
    Allium cepa
  • AliasOnion, オニオン, 玉葱
  • Place of originCentral Asia such as northwest India
  • Place of floweringField
  • Flowering seasonJune

What is Onion

Onion or Tamanegi (scientific name: Allium cepa) is native to Central Asia such as northwest India, and is a two-year grass or perennial plant of the family Amaryllidaceae. Rhizome vegetables to eat bulbs. In the early summer, the spherical scattering inflorescence stretching from the tip of the flower stalk will bloom by gathering many small white flowers such as bamboo shoots. Small flowers are six fpetals and white streaks have green streaks. Onions are sold as shipped once dried and stored for about a month after harvesting. When onion is cut,, there is a component called allylpropion, so tears come out because the lacrimal glands are stimulated. Because it sweetens when heated, it is used for curry dishes, Western-style hot dishes and onion soup. The new and fresh onion is one which was shipped directly as it was harvested in spring, has much moisture and little irritation, so it can be eaten raw vegetable salad or onion slice. Onion is nontoxic to humans, however giving food containing onions such as beef bowl to an animal such as a dog causes strength anemia and may even die.

Generic name: Onion, Scientific name: Allium cepa L., aka:Tamanegi, Place of origin: Central Asia, Lifestyle type: Perennial plant, plant height: 20 to 30 cm, leaves: alternate, inflorescence: scattering inflorescence, flower color: white, flower size: 0.2 to 0.5 cm, flowering stage: early June, bulb shape: Spheroid, bulbous stem: 10 cm, utilization site: leaf (bulb leaves), fruit type: fruit.


  • Eye
    Asparagales
  • Family
    Amaryllidaceae
  • Genus
    Allium
  • Species
    A. cepa
  • Type of flower
    Radial symmetrical flower
  • Array of flower
    Scattered inflorescence/ umbrella shape
  • Petal shape
    Funnel/trumpet shaped
  • Leaf type
    Linear
  • Edge of the leaf
    All edges
  • Life typePerennial rhizome vegetables
  • Flower colorsWhite
  • Colors of the leavesGreen
  • Fruit colorGreen
  • Height20.0 ~ 30.0 cm
  • Diameter of flower0.2 ~ 0.5 cm

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