HORTICULTURE

Detailed explanation-1: -Biennial means (an event) lasting for two years or occurring every two years. The related term biennium is used in reference to a period of two years. In particular, it can refer to: Biennial plant, a plant which blooms in its second year and then dies.

Detailed explanation-2: -: happening every two years : biennial.

Detailed explanation-3: -biennial, any herbaceous flowering plant that completes its life cycle in two growing seasons. During the first growing season, biennials produce roots, stems, and leaves. During the second growing season, they produce flowers, fruits, and seeds, and then they die.