One of the most cold-hardy greens. This variety will overwinter without any protection and continue growing into the spring. High in antioxidants and vitamins, these are excellent in salads and add a very unique twist. Great for all seasons gardening, especially those with low lighting as these only require a minimum of 4 hrs of sun. Red-veined sorrel has stunning red veins running through deep green leaves that never get larger than a few inches in length.