Young daikon radishes are often used shredded in sushi, but their light, slightly spicy flavor is a unique addition to many other dishes. Mature daikon is pickled or cooked; add to stir-fries or soups for crunch. Daikon is a winter radish, requiring shortening day length and cool temperatures to form. Sow after mid-summer or fall depending on your growing season. Deep roots are also used as a cover crop to break up heavy soils. Stores well.