Watermelon Radish Seeds (Organic)

Watermelon Radish (Raphanus sativus) is a uniquely colored heirloom daikon-type radish that grows to about 4 inches, with green shoulders fading to white outside and brilliant bright-pink inner flesh. A hardy annual, it is an extremely mild radish that is peppery-sweet inside and a touch hotter near the white outer ring.

At a glance

• Variety: Watermelon (Shinrimei daikon type), heirloom, organic, non-GMO
• Botanical name: Raphanus sativus
• Days to maturity: 55 days
• Sun: Full sun
• Spacing after thinning: 3 inches
• Planting depth: 1/2 inch
• Seeds per pack: About 200
• Size at maturity: Roots about 4 inches across

Best for

• Colorful fresh slices in salads and slaws
• Pickling and garnishes
• Roasting to bring out sweetness
• Cool-season fall and late-summer plantings

How to grow

Sow seeds 1/2 inch deep directly in the garden, with germination in 4 to 12 days at soil temperatures of 45 to 95 degrees. Grow in full sun in well-drained soil with added organic matter and a pH of 6.0 to 7.0, avoiding excess nitrogen for good root development. Sow in late summer or fall for best results, since warm spring temperatures can cause bolting, and thin plants to 3 inches apart. Harvest around 3 to 4 inches across, as roots grow milder and woodier the longer they stay in the ground.

Flavor profile

Mild and peppery-sweet with crisp flesh and a striking pink interior.

About Grow Organic

Grow Organic, also known as Peaceful Valley, has supplied seeds, tools, and growing supplies to organic gardeners and farmers since 1976.