Grow Guide – Carrots

Starting Seeds:

  • Direct Sow: Carrots are best sown directly into the garden bed as they do not transplant well due to their delicate taproot.

Planting Time:

  • Minimum Overnight Temperature for Planting: Carrots can tolerate cool temperatures and can be planted when the soil temperature reaches at least 45°F (7°C) overnight.

Time to Harvest:

  • First Harvest: Carrots can be harvested as baby carrots in about 30 to 40 days, or as full-sized carrots in 60 to 80 days, depending on the variety and growing conditions.


  • Frequency: Carrots are light feeders and do not require frequent fertilization. Apply a balanced fertilizer, such as 5-10-10, at planting time.
  • NPK Requirements: Carrots have low nitrogen (N) requirements but benefit from phosphorus (P) and potassium (K) for root development.

Companion Planting:

  • Avoid Growing Next to: Avoid planting carrots near members of the onion family, such as onions, garlic, and leeks, as they can inhibit each other’s growth.
  • Beneficial Plants: Planting aromatic herbs like dill and parsley nearby can attract beneficial insects that prey on carrot pests.

Planting Depth & Spacing:

  • Seed Planting Depth: Plant carrot seeds ¼ to ½ inch deep in loose, well-drained soil.
  • Plant Spacing: Space carrot rows 12 to 18 inches apart, with individual carrots spaced 2 to 4 inches apart within the row.

Growth Duration:

  • Production Period: Carrots will continue to produce until they reach maturity, which can range from 60 to 80 days depending on the variety.

Pests and Pest Management:

  • Pest Susceptibility: Carrots are susceptible to pests such as carrot rust fly, carrot weevil, and aphids.
  • Combatting Pests: Use row covers to protect young plants from pests, practice crop rotation, and use organic insecticides like neem oil or insecticidal soap as needed.

Harvest Season:

  • Harvest Period: The harvest season for carrots typically lasts several weeks to a couple of months, depending on the variety and climate.

Succession Planting:

  • Succession Planting: Succession planting carrots every 2 to 3 weeks can provide a continuous harvest throughout the growing season.

Tips for Beginners:

  • Ensure consistent moisture by watering regularly, especially during dry periods.
  • Thin carrot seedlings to the appropriate spacing to prevent overcrowding and competition for nutrients.
  • Mulch around plants to suppress weeds and maintain soil moisture.

Disease Resistant Varieties:

  • Look for carrot varieties that are resistant to common diseases such as carrot rust fly and root rot. Examples include ‘Bolero’, ‘Napoli’, and ‘Mokum’.

Pest Resistant Varieties:

  • While no carrot varieties are completely pest-proof, varieties with strong foliage and vigorous growth may be less susceptible to pest damage. Varieties such as ‘Scarlet Nantes’, ‘Atomic Red’, and ‘Purple Haze’ are known for their resilience.

USDA Garden Zones:

  • Carrots can be grown in a wide range of USDA Hardiness Zones, from Zones 3 to 10, but perform best in cooler climates with well-drained soil and plenty of sunlight.

By following these guidelines, beginners can successfully grow organic carrots in their gardens, enjoying a bountiful harvest of this nutritious root vegetable.

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