Alcea rosea is variously described as a biennial (having a two-year life cycle), as an annual, or as a short-lived perennial. It frequently self-sows, which may create a perception that the plants are perennial.
Alcea rosea is often described as a biennial with a two-year lifespan, but it can also be classified as an annual or a short-lived perennial. Its tendency to self-sow can create the impression of being a perennial plant.