Allium Cepa, Common Onion Seed 5000 PCS, Bulb Onion Yang Cong

Buy Allium Cepa, Common Onion Seed 5000 PCS, Bulb Onion Yang Cong. Any Question Just Feel Free To Conatct Us >>

Allium Cepa < 洋葱 Yang Cong >
Common Name: Common Onion, Bulb Onion, Onion
Family: Amaryllidaceae
Binomial name: Allium Cepa

The onion plant has been grown and selectively bred in cultivation for at least 7,000 years. It is a biennial plant, but is usually grown as an annual. Modern varieties typically grow to a height of 15 to 45 cm (6 to 18 in). The leaves are yellowish- to bluish green and grow alternately in a flattened, fan-shaped swathe. They are fleshy, hollow, and cylindrical, with one flattened side. They are at their broadest about a quarter of the way up, beyond which they taper towards a blunt tip. The base of each leaf is a flattened, usually white sheath that grows out of a basal disc. From the underside of the disc, a bundle of fibrous roots extends for a short way into the soil. As the onion matures, food reserves begin to accumulate in the leaf bases and the bulb of the onion swells.

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