Biennial plants, or biennials, are plants that live for a year, lay dormancy | dormant for a year, and then live and grow for one more year.<ref>Wile, Dr. Jay L. Exploring Creation With Biology. Apologia Educational Ministries, Inc. 1998</ref> They typically store energy in the first year in order to flower and set seed in the second year.
A biennial plant is a flowering plant that, generally in a temperate climate, takes two years to complete its biological life cycle.