Flowers blooming in a garden can be preserved by drying them for use in arrangements, decorations and various other applications. Dry flowers can be annual or perennial. Annuals and perennials spice the landscape with their colorful flowers and foliage.Annual flowers are versatile, sturdy and inexpensive. They quickly yield color for a long season. Perennial flowers return year after year. They fit into many landscapes and can be used in borders, as accents, or as strong focal points. The foliage of many perennial plants is attractive during non-flowering seasons.