How to Harvest and Use Radish. When used as a food crop, Daikon radishes can be harvested approximately 60 days after planting. Harvesting. Radishes can be harvested by pulling or by gently loosening the surrounding soil. Collecting Radish Seeds Spring Radishes - The fast-maturing, round radishes are ready for harvest in 3 to 4 weeks. By growing a number of varieties from both types, you can be harvesting radishes throughout the spring, and again in the fall and winter. They have long, thick taproots that can range in size from eight inches to 24 inches. For fresh market sales, harvest roots at 2 1/2 inches. If used for processing, roots should be allowed to grow to 12 to 14 inches. ‘Daikon’: A white, Japanese, “winter radish” that gets large (up to 16 inches long).Best grown in cooler climates or during the cooler ends of the growing season. Chinese white radishes mature in a period of three to six weeks. ‘Burpee White’: spring variety, white skin. Roots are bicolored globes, bright scarlet on the upper portion, and white on the lower third. Harvest the radishes. Radishes are among the fastest-maturing garden crops. A general rule of thumb is that radishes are ready 22-50 days after sowing, but the timing depends on the type. So, not only can you toss the radish root into a salad, snack on the delicious pods, but you can harvest radish seed pods as well. Daikon also goes by other names including white radish, Chinese radish, and Japanese radish. ‘French Breakfast’: a late-maturing variety that does OK in moderate heat. Radishes are typically ready to harvest when their roots are about 1 inch (2.5 cm) in diameter. Harvest globe-shaped radishes when they are slightly bigger than a golf ball. Oh yes, you can then compost the rest of the plant so not a stitch of it is wasted. Bicolored globes with white sweet flesh and medium sized tops. Like all radishes, it is a member of the Brassicaceae family. You’ll usually see the top portion of the radish poking up through the soil. The roots are generally white, although the Korean variety of Daikon can be partly green. A popular Chinese variety is … But the trick to prolonging the harvest of this nutritious vegetable lies not just in extending the planting season, but also in extending the storage time of harvested roots. Brassicaceae Raphanus sativus Harvest at 1" diameter. Check your seed packet for your variety's expected size at harvest and time to maturity. Tops break off easily during harvesting, so radishes should be harvested by hand. You can also push back the dirt and see if a bulb has grown. When it appears to be almost an inch across, it is ready to pick. Medium tops and white sweet flesh. Although radishes are easy to grow, knowing when to harvest is the key to perfect radishes with crisp roots and mild flavor instead of hot as fire and as pithy as corks. The plants produce large roots 2 to 4 inches in diameter and can range in length from 6 to 20 inches. They’re fairly simple to grow, and with regular spring and fall sowings, gardeners can fill their salad bowls with the crisp crunch of radish roots for months on end. Yes, you can save seed from radishes. Daikon radishes are a cultivar of radish that is native to Southeast Asia. It also has a longer date to maturity than other types of radish, which makes sense for its larger size. To harvest, lift the entire plant out of the ground with your hand. I sometimes let them get bigger, but there is a fine line between a big radish and a ruined, woody one. Harvesting Radishes . ‘Watermelon’: a mild, sweet radish with white skin and a pinkish center. Are typically ready to pick then compost the rest of the plant so not a stitch of it ready. 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