where is oregano grown in the world?
<answer> In Mediterranean climates oregano grows as a perennial plant. <context> Oregano is known botanically as Origanum vulgare and is called wild marjoram in many parts of Europe since it is closely related to the herb that we know as sweet marjoram. It is a small shrub with multi-branched stems covered with small grayish-green oval leaves and small white or pink flowers. In Mediterranean climates oregano grows as a perennial plant, but in the harsher climates of North America, they grow as annuals.