I keep my seeds stock current. There is no guarantee on the seed germination because seed germination doesn't depend on seeds quality only. they require user experience, perfect temperature, proper watering. so i am selling my seeds as is with no guarantee. 
500+ Large Leaf Sorrel Seeds, NON-GMO, Heirloom, hibiscus, sorrel, perennial.

Sorrel is an early spring perennial vegetable, hardy into USDA Zone 3. Its bright lemony flavored leaves are good in mixed salads, on sandwiches and in soups. Cooking greatly reduces the tartness, so you can put large amounts of sorrel in soups.

Sow sorrel seeds indoors in early spring. Germination takes about 2 weeks. Transplant in mid to late spring. Space plants 12 to 15 inches apart and water generously. This herb grows best in full sun, but a partially shaded environment helps it deal with the heat. Not a beautiful plant and looking a bit weedy, cut back flower stalks to promote new growth. Sorrel does well in a container 6 to 12 inches deep and is ideal to grow as a cool season annual as the young leaves have the best flavor.