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How to Grow Watermelon Radish

What is watermelon radish and how to grow it? Learn how to grow watermelon radish from our expert gardeners!
Course: Vegetables
Cuisine: Watermelon Radish
Keyword: how to grow, vegetables,, watermelon radish


  • Purchase seeds from a reputable nursery or online. Watermelon radish seeds may be hard to find, but you’ll have no problem ordering from from an online seeds catalog.
  • Like radishes, watermelon radishes are just as easy to grow and very similar in planting and growing methods.
  • Plant anywhere from early to late spring, and give them about 65 days to mature.
  • You can plant every 2 weeks for a continuous harvest.
  • Plant seeds in well drained, fertile soil.
  • Soil must be sandy and rich in organic matter.
  • Before planting watermelon radish seeds, amend the soil with 2-4 inches of well composted organic matter and 2-4 cups of all purpose fertilizer (16-16-8 or 10-10-10) per 100 square feet. Work these into the top 6 inches of the soil.
  • Once soil temperatures have reached 40F (4C), you can sow the seeds directly into the ground.
  • Sow seeds in rich soil evenly spaced in rows 6 inches apart at a depth of 1/2 inch.
  • Tamp the soil down lightly and water the seeds in.
  • Once seedlings are 2 inches tall, thin them to 2 inches apart.