Garden root is a term used to describe plants that are grown in the ground and whose roots are used for food. The two most common garden root vegetables are PARSNIP and TURNIP. Parsnips are a root vegetable with a white flesh and a sweet, nutty flavor. They have seven letters and are often used in soups and stews. Turnips are a root vegetable with a white or purple flesh and a slightly bitter taste. They have six letters and are often used in salads or roasted as a side dish.