What is a characteristic of biennial plants?

Biennial plants are defined by their life cycle, which takes two growing seasons to complete. In the first growing season, they typically focus on establishing roots, stems, and leaves; they do not produce flowers during this time. It's only in the second growing season that they bloom, set seed, and then die. This characteristic distinguishes them from annual plants that complete their life cycle within a single growing season and perennial plants that can live for multiple years, flowering each season. Unlike perennial varieties, biennial plants also do not persist for many years, making their two-season cycle a defining trait.