What type of weeds live longer than two years?

Perennials are defined as plants that can live for more than two years, with some varieties persisting for many years or even decades. They exhibit a growth cycle where they grow, flower, and reproduce over multiple seasons. Unlike annuals, which complete their lifecycle within a single growing season, perennials establish deep root systems that can survive adverse conditions and regrow each year. This longevity allows them to contribute to the ecosystem and gardening landscapes over extended periods.

In contrast, annuals complete their entire life cycle within one year, while biennials typically have a two-year lifecycle, where they grow vegetatively in the first year and flower and produce seeds in the second. Annual grasses fall under the category of annual plants and thus do not meet the criteria of living longer than two years.