.   Gardening 2 Ab Service Projects Gardening in Arizona Sandy Rauperstrauch assembled a series of summaries of favorite plants for the garden   They are re-created here as a great reference.  Thanks Sandy Is it an Annual, Biennial or a Perennial? Local climatic conditions, development of new cultivars, and new uses for specific garden flowers have blurred the distinctions among annuals, biennials, and perennials. Annuals have traditionally been referred to as plants that complete their life cycle in one growing season. Some perennials that bloom quickly (verbena, Jerusalem cherry) are grown as annuals and discarded at the end of one season. Some of our so-called annuals (begonias, impatiens, snapdragons) are actually perennials in warmer climates or mild winters. From the NC State University Horticultural News.