What is the difference between annuals, biennials, and perennials?

• A. Annuals live for multiple years; Biennials are annuals; Perennials live two years
• B. Annuals complete a life cycle in one year; Biennials in two; Perennials live for multiple years
• C. Annuals complete two-year cycles; Biennials one-year; Perennials one year
• D. All three categories have the same life span

Answer: (B)

Plants are grouped by how long they live and how long it takes them to complete their life cycle. Annuals finish their entire life cycle in one growing season: they germinate, grow, flower, produce seeds, and die within that single year. Biennials need two growing seasons to complete their life cycle: they typically grow vegetatively in the first year and then flower and set seed in the second year, after which they die. Perennials live for multiple years, returning for several growing seasons; some may die back in winter and regrow from roots or crowns in spring, often blooming year after year with proper care. This distinction helps gardeners plan—annuals provide quick, one-season splash of color and must be replanted each year, biennials add flowering in the second year, and perennials persist over many years.