Perennial plants persist for many growing seasons. Generally the top portion of the plant dies back each winter and regrows the following spring. One reason why the perennial plant is sought after is because of its remarkable ability to survive year round through most weather conditions. Not unlike your local mail delivery person, perennials lives on through rain, sleet, or snow – perfect for the year round gardener. What is it about perennials that enables it’s winter survival abilities, whereas other plants will shrivel up and die as soon as the going get tough? Why can’t scientists engineer annuals or biennials to last as long the perennial plant?