Garlic is a herbaceous plant reaching 20-100 cm in height.

An excerpt from the article 20 facts about garlic

It has an underground bulb (a transformed underground shoot with a storage and spore function, the main part of which are leaves), called a bulb. An onion is composed of several or a dozen or so bulbs, called cloves (these are buds with a storage function). The head is spherical, and slightly flattened.