Onion is a vegetable with the letter O. The correct name of the colloquially referred to onion is garlic onion, because it is one of the varieties of garlic. It is found in almost all countries of the world. It is a vegetable that prefers a temperate climate. As for the cultivation of onions, it should start 2 years after fertilization with manure.
Olluco is an O vegetable. It is very popular in South America, where it is eaten in exchange for potatoes. It is a difficult vegetable to grow. They prefer moderate temperatures during the day and night and very high insolation. Olluco can be grown as a perennial.