Vegetable Seeds ShareShareSharePin37ShareTweetEmail37Shares How to Grow Radish Sprouts Growing Radishes [Planting Directions] Soil Temperature: 45-90°FPlanting Depth: 1/2″Germination: 4-12 DaysHeight At Maturity: 3″-7″Days To Maturity: 24-28 DaysSun/Shade: Full SunSpacing After Thinning: 4″-6″