How to Grow Kale in Your Garden

Kale thrives in cool weather and well-draining soil with a pH between 6.0-7.0. Plant seeds directly in the garden 2-4 weeks before the last frost date, spacing them 12-18 inches apart in full sun to partial shade.

  1. Find Your Sunny Spot. Select a spot that gets 6-8 hours of sunlight daily, though kale tolerates partial shade better than most vegetables. Ensure the area has good drainage and protection from strong winds. Avoid low-lying areas where water collects after rain.
  2. Build the Perfect Bed. Test soil pH and aim for 6.0-7.0. Work in 2-3 inches of compost or well-aged manure to improve soil structure and nutrients. Kale prefers loose, fertile soil that drains well but retains moisture. Add organic matter if your soil is heavy clay or too sandy.
  3. Plant by the Calendar. Start seeds indoors 4-6 weeks before the last frost date, or direct sow 2-4 weeks before the last frost. For fall harvest, plant 10-12 weeks before the first expected frost. Kale actually tastes sweeter after experiencing light frosts.
  4. Get Seeds in the Ground. Sow seeds 1/2 inch deep and 2 inches apart in rows spaced 18 inches apart. Thin seedlings to 12-18 inches apart once they reach 3-4 inches tall. If using transplants, space them 12-18 inches apart immediately. Water gently after planting.
  5. Water Deep and Steady. Keep soil consistently moist but not waterlogged. Provide about 1 inch of water per week, including rainfall. Water at the base of plants to avoid wetting leaves, which can encourage disease. Mulch around plants to retain moisture and suppress weeds.
  6. Fuel Growth Strategically. Apply a balanced fertilizer when planting, then side-dress with nitrogen-rich fertilizer 3-4 weeks after planting. Use compost or fish emulsion every 3-4 weeks during the growing season. Avoid over-fertilizing with nitrogen, which creates tender leaves prone to pests.
  7. Scout and Defend. Watch for cabbage worms, aphids, and flea beetles. Use row covers for young plants or hand-pick larger pests. Apply organic insecticidal soap for aphids. Remove any damaged or yellowing leaves promptly to prevent disease spread.
  8. Pick Fresh Throughout Fall. Begin harvesting outer leaves when they reach 6-8 inches long, usually 50-65 days from planting. Cut leaves at the base of the stem, leaving the center growing point intact. Harvest regularly to encourage continued production throughout the season.