Growing Radishes

Planting, Growing, and Harvesting Radishes


radishes at a roadside market

Annette McCarthy

Radishes are a hardy, cool-season vegetable that can produce many crops each season due to its rapid days to maturity. Here’s how to plant and grow radishes in your garden!

Radish seeds can be planted in both the spring and the fall, but growing should be suspended in the warmer months. Overall, radishes are a very easy vegetable to grow.


  • Plant 4-6 weeks before the average date of last frost, after aged manure or organic fertilizer has been worked into soil.
  • Directly sow seeds ½ inch to an inch deep and one inch apart in rows 12 inches apart.
  • After they have sprouted, thin to about 2-inch spacings. Crowded plants will not grow well.
  • Radishes need sun. If they are planted in too much shade—or even where neighboring vegetable plants shade them—they put all their energy into producing larger leaves.
  • Practice three-year crop rotation.
  • Plant consecutively every two weeks or so while weather is still cool for a continuous harvest of radishes.
  • Plan on a fall planting. You can plant radishes later than any other root crop in late summer or early fall and still get a harvest.


  • Radishes require well-drained soil with consistent moisture. Keep soil evenly moist but not waterlogged.
  • Thin radishes to about two inches apart when the plants are a week old. You will be amazed at the results.



  • Radishes will be ready to harvest quite rapidly, as soon as three weeks after planting for some varieties.
  • Do not leave in the ground long after their mature stage; their condition will deteriorate quickly.
  • Cut the tops off short, wash the radishes, and dry them thoroughly. Store in plastic bags in the refrigerator.
  • Radish greens can be stored separately for up to three days.

Recommended Varieties

Wit & Wisdom

Don’t be afraid to plant radish seeds that are up to five years old. All may not germinate, but you’ll have plenty that will.


Cooking Notes


Planting Times

Growing Radishes

Botanical Name

Raphanus sativus

Plant Type Vegetable
Sun Exposure Full Sun
Soil Type Any
Soil pH Neutral
Bloom Time
Flower Color
Hardiness Zones 2, 3, 4, 5, 6, 7, 8, 9, 10
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