What is a biennial plant?
A Biennial plant is a plant when the seeds are sown usually produces foliage, roots, and leaves and stems the first season and the second season will produce flowers and set seeds giving you a plant that then seems like a perennial thereafter. A good example of this is the wonderful flowering plant the hollyhock. They look like they die each year, but they set their seed after the 2nd year and each year thereafter thus producing wonderful tall flowers each season.