No, the most familiar onions are not perennials, but yes, there are onions that are perennials.
Specifically, many familiar onions are biennials. But they are treated as annuals in that their bulbs are used for one growing season when their life cycle allows them to survive two. There are some onions - such as the Egyptian or potato onion - whose life cycle spans more than two growing seasons. They therefore are considered perennials.
Amaryllidaceae
The scientific or taxonomic name would be Linum perenne.
The phylum of an onion is Magnoliophyta, which is also known as Angiosperms or flowering plants.
The scientific or taxonomic name would be Ligularia tussilaginea.
The scientific or taxonomic name would be Oenothera fruticosa.
The onion is known as the bulb onion or common onionIt is used as a vegetable (root vegetable) and is the most widely cultivated species of the genus Allium. This genus also contains several other species variously referred to as onions and cultivated for food, such as the Japanese bunching onion, the Egyptian onion, and the Canada onion.The name "wild onion" is applied to a number of Alliumspecies.The onion is most frequently a biennial or a perennial plant, but is usually treated as an annual and harvested in its first growing season.
it is perennial
A perennial is a perennial no matter where it is grown.
Perennial
perennial
Perennial
A tender perennial is a perennial plant that is not hardy in cold climates.
Perennial
Perennial :)
perennial
Basil is an annual, not a perennial.
They are perennial plants