Blood Veined Sorrel (Rumex sanguineus) Also called red-veined dock. Beautiful culinary herb. Highly decorative dark red veining adds color and zest to salads, etc. Similar to common sorrel, leaves have a mild lemon-like flavor, are high in vitamin C and other nutrients and are used traditionally in soups, stews, sauces, meat and seafood dishes or fresh leaves can be tossed into salads. Easy to grow perennial in zones 6-9 similar in appearance and growth to spinach. Zones 5-7. Live plant in 3 inch container.