How to Germinate Kohlrabi Seeds

Germinating kohlrabi seeds is a straightforward process, but it does require some attention to detail to ensure optimal growth. Here are the steps to germinate kohlrabi seeds:

Materials Needed:

• Kohlrabi seeds
• Seed-starting mix or potting soil
• Seed trays or small pots
• Water
• Plastic wrap or a germination dome (optional but useful)
• Spray bottle (optional)
• Labels (optional)

Step-by-Step Guide:

1. Timing:
   • Decide whether you want to start your seeds indoors or directly in the garden. If starting indoors, begin the process about 4-6 weeks before the last expected frost date for your area.
2. Prepare the Soil:
   • Use a high-quality seed-starting mix or potting soil. Fill your seed trays or small pots with the soil, leaving about 1/2 inch from the top.
3. Sow the Seeds:
   • Make small furrows or holes in the soil, approximately 1/4 inch deep.
   • Place 1-2 seeds in each hole or cell.
   • Cover lightly with soil and gently press down to ensure good soil-to-seed contact.
4. Watering:
   • Moisten the soil evenly but do not overwater. The soil should be damp, not soaking wet.
   • Use a spray bottle for a gentle and even distribution of water.
5. Create a Moist Environment:
   • Cover the seed trays with plastic wrap or a germination dome to keep the humidity high. Remove the cover once the seeds have sprouted to allow for air circulation.
6. Light and Temperature:
   • Place the seed trays in a warm area with temperatures around 65-75°F (18-24°C). They need this warmth for optimal germination.
   • Once the seeds sprout, provide them with plenty of light—about 14-16 hours of light per day is ideal. You can use fluorescent lights or grow lights.
7. Thinning:
   • If more than one seedling sprouts per cell, thin them out to ensure each plant has enough room to grow. Snip off the weaker seedlings at the soil level with scissors to avoid disturbing the roots of the stronger seedlings.
8. Transplanting:
   • If you started the seeds indoors, harden off the seedlings before transplanting them to the garden. To do this, gradually expose them to outdoor conditions for a week or so.
   • Transplant them to your garden or a larger pot when they are about 4-6 inches tall and have at least two sets of true leaves. Space the seedlings about 8-12 inches apart.

Tips for Success:

• Consistent Moisture: Keep the soil consistently moist but not waterlogged during the germination process.
• Good Air Circulation: After the seeds have germinated, ensure good air circulation to prevent fungal diseases.
• Fertilizer: You can use a diluted, balanced liquid fertilizer once the seedlings have their first true leaves.
• Keep Records: Label your seed trays with the date of planting and the variety of kohlrabi to keep track of your plants.

By following these steps, you should have high success in germinating kohlrabi seeds and growing healthy seedlings ready for transplanting.