We are offering fresh onion. The onion plant (allium cepa) is unknown in the wild but has been grown and selectively bred in cultivation for at least 7,000 years.[citation needed] 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-green and grow alternately in a flattened, fan-shaped swathe. They are fleshy, hollow and cylindrical, with one flattened side