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Onions are one of the most popular and widely cultivated vegetables. Onions are biennial, perennial plants used to prepare and season a wide variety of dishes.
There are currently more than three hundred different species of onion. Although onion seedlings are more popular, onion seeds are also used to sow onions. The latter are slower to germinate but produce just as much. Onion seeds need to be swollen so that they germinate more quickly. Onions are appreciated for their tasty flavour and fragrance. Both the roots and leaves of onions are edible and rich in vitamins. In cooking, onions are the basis of many dishes and can be eaten raw, cooked, fried or steamed.