What are examples of bierenial crops?

Biennial crops are plants that require two growing seasons to complete their life cycle. Common examples include carrots, beets, and onions. In the first year, these crops typically grow foliage and develop a root system, while in the second year, they flower, produce seeds, and complete their life cycle. After harvesting in the first year, they can be allowed to grow for a second year to obtain seeds.