The Van Zyverden Potatoes Dark Red Norland Vegetable Plants are also commonly known as so called 'New potatoes' and considered an improvement over traditional red potatoes. Their skins are darker than most other red potatoes and are said to be better resistant to typical potato diseases. They mature in and can be harvested in the summer. 12 tubers typically yield 8 lb. to 12 lb. Give your vegetable garden something new and bring delicious flavor to your meals by planting these potato plants.