Celeriac Seeds - Mars Celeriac \'Mars\' is a modern and delicious bred variety that grows large, uniformed roots, that holds huge healthy crops. The interiors stay firm, even while the roots remain large, and they strong and sturdy in the ground. As they hold themself so well in soil, these upright plants result in less splash from rain and are unlikely to suffer from celery leaf spot. Once they are ready to harvest, these crops will store well and make a great addition to homemade slaws, salads and sandwiches! Just grate raw and enjoy.