Package of 500 Seeds, Watermelon Radish (Raphanus sativus) Non-GMO Seeds by Seed Needs Quality Radish seeds packaged by Seed Needs. Packets are 3.25" wide by 4.50" tall and come with a full colored illustration on the front side, as well as detailed sowing instructions on the reverse.. Watermelon Radish roots will be ready for harvesting in roughly 60 days. Watermelon Radish will produce white skinned roots, with a deep pink colored flesh. Earthy tasting and delicious. Slice them up in salads to enjoy raw, or enjoy them cooked as well. All Radish seeds sold by Seed Needs are Non-GMO based seed products and are intended for the current & the following growing season. All seeds are produced from open pollinated plants, stored in a temperature controlled facility and constantly moved out due to popularity.