- Name: Japanese Minowase Radish - Other Common Names: Daikon - Scientific Name: Raphanus Sativus - Color: White - Plant Seeds: Spring Or Fall - Harvest: 45 Days - Hardiness Zone: Annual - Plant Height: 9 - 12" - Plant Spacing: 2 - 3" - Light Requirements: Sun - Soil Water Preferences: Average - Quantity: 500 Seeds - Other: Minowase Is An Heirloom Japanese Radish. These Radishes Are Amazingly Huge, Measuring Up To 2 Feet Long. They Are 3? Wide Tapered. The Lovely White Roots Are Sweet, Mild, Stay Crisp. The Japanese Minowase Radish Is Also Great For Greens. They Are Very Tender, Not At All Bitter. These Quick Maturing Tasty Treats Can Be Spring Or Fall Planted.