Swiss Chard with large white ribs is a variety of Swiss chard known for its thick, white midribs and large, smooth leaves. It is heat-tolerant and can grow up to 24 inches tall. This variety is easy to grow and can be harvested in about 58 days after planting. Delicious greens used much the same as spinach. Large fairly smooth thick leaves with white rib. High in vitamin content and easy to grow. White ribs can be sliced and used in salads and stir-fry or steamed like asparagus.