The parsnip (Pastinaca sativa) is a root vegetable that's closely related to the carrot and parsley family. Our packs have over 200 seeds in them and around 6000 per ounce. For an acre, you need around 3 pounds. Parsnips are cold tolerant, and they have a much better flavor after the frost has hit them. They take awhile to grow but are worth the wait; they will break through the toughest of soils. Happy growing!!!