How to Grow Lemon Basil from Seed

Lemon basil (Ocimum × citriodorum) is a delightful herb known for its citrusy aroma and fresh, tangy flavor. Growing lemon basil from seed is simple and rewarding, whether you want to cultivate it indoors or in your garden. Here’s a step-by-step guide to help you grow healthy lemon basil plants from seed.

pot of lemon basil.

Choosing Lemon Basil Seeds

Start with high-quality lemon basil seeds from a reputable supplier. Look for organic or non-GMO seeds to ensure the best germination rates and plant health.

Preparing the Soil

Lemon basil thrives in well-draining, nutrient-rich soil. Use a light potting mix or prepare garden soil by adding compost to enhance fertility. The ideal soil pH for lemon basil is between 6.0 and 7.5.

Sowing the Seeds

  • Sow seeds directly into the garden or in containers indoors.
  • Plant the seeds about ¼ inch deep and lightly cover them with soil.
  • Space the seeds 8–12 inches apart to allow for proper growth and airflow.

Providing the Right Conditions

  • Light: Lemon basil requires full sun (at least 6–8 hours of sunlight daily). Place the pots near a bright window or use a grow light if growing indoors.
  • Temperature: Maintain temperatures between 65–85°F (18–29°C) for optimal germination and growth.
  • Watering: Keep the soil consistently moist but not waterlogged. Water gently to avoid washing away seeds.

Germination and Seedling Care

Lemon basil seeds usually germinate within 7–10 days. Once the seedlings appear:

  • Thin them out to ensure healthy spacing.
  • Continue to keep the soil moist.
  • Provide good air circulation to prevent fungal diseases.

Transplanting (If Started Indoors)

After the seedlings have at least two sets of true leaves and outdoor temperatures are warm, you can transplant them:

  • Harden them off by gradually exposing them to outdoor conditions over 7–10 days.
  • Plant them in well-draining garden soil or larger outdoor containers.

Caring for Mature Plants

  • Watering: Water regularly, but avoid overwatering. Allow the soil to dry slightly between waterings.
  • Fertilizing: Use a balanced, organic fertilizer every 2–3 weeks to encourage growth.
  • Pruning: Pinch off the tips regularly to promote bushier growth and prevent premature flowering.

Harvesting Lemon Basil

Lemon basil leaves can be harvested once the plant reaches 6–8 inches tall. Pick leaves regularly to encourage continued growth. Harvest in the morning for the best flavor.

Storing and Using Lemon Basil

Use fresh leaves in salads, teas, and dishes or dry them for later use. Store dried leaves in an airtight container away from light and heat.

By following these steps, you can successfully grow lemon basil from seed and enjoy its refreshing citrusy flavor all season long!

Learn To Grow Herbs

If you're looking for even more detailed information, check out our gardening section of the website. If you still have questions, let me know in the comments section below.

LEARN HOW TO HARVEST, CLEAN, AND PRESERVE YOUR HERBS

Discover how to harvest, clean, and preserve your fresh herbs effectively, allowing you to enjoy their taste year-round. This course includes printable handouts and videos that take you step-by-step to ensure you get the most from your herbs! 

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