The tender, succulent spears of asparagus have been considered a delicacy since ancient times, and with their mild, nutty flavor, nutritional value, and eagerness to come back year after year, it's no wonder. Once established, a well-planned asparagus bed can produce for 20 to 30 years, providing a truly delicious and versatile veggie that contains an impressive list of B vitamins, dietary fiber, antioxidants, and loads more nutrients.