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Raphanus /ˈræfənəs/

Common name: Radish · Daikon

Raphanus A small genus of mustards native to Europe and western Asia, domesticated in antiquity for its swollen, peppery taproots. Raphanus sativus, the radish, is grown worldwide in forms ranging from quick salad radishes to giant winter daikon. It is one of the fastest and easiest crops to grow, preferring cool weather and loose, well-drained soil.

Care summary

Sun Full sun to partial shade
Water Even moisture; uneven watering causes splitting
Soil Loose, well-draining, pH 6.0–7.0
Hardiness
Mature height
Pet safe

Fun facts

  • Some radish varieties go from seed to harvest in as little as three weeks, making them a classic beginner crop.
  • The daikon radish of Japan can produce roots weighing several kilograms.
  • The radish's peppery bite comes from mustard oils, the same compounds found in horseradish and wasabi.
  • Radishes are sometimes sown with slower crops like carrots as living row markers, since they sprout in days.

Common problems

    • Cover seedlings with floating row cover
    • Keep beds free of weeds
    • Use sticky traps near plantings
    • Rotate crops each season
    • Cover beds before flies lay eggs
    • Remove infested plants promptly
    • Keep soil consistently moist
    • Sow early in cool weather
    • Harvest promptly at mature size
    • Avoid sowing in hot weather
    • Provide steady moisture and shade