The term for plants that live for more than two years is "perennials." Unlike annuals, which complete their life cycle in one growing season, or biennials, which take two years to complete their life cycle, perennials can live for many years, often blooming multiple times throughout their life. Many common garden plants are perennials, including hostas, daylilies, and peonies. They often develop deep root systems that help them survive seasonal changes and adverse conditions. Perennials are valued in gardening and landscaping for their longevity and ability to return year after year, providing consistent beauty and habitat for wildlife.