For optimal germination rates, initiate seed propagation indoors under controlled conditions—unless the species exhibits a high sensitivity to root disturbance. This approach allows precise regulation of temperature, humidity, and light, improving germination consistency and seedling viability. Do not skip any recommended seed treatments, as they are essential for uniform and successful germination.
Best Time to Sow
Indoors: Late winter to early spring
Outdoors: After last frost when soil stays above 15 °C (59 °F)
Seed Treatment
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Soak seeds in warm water for 12–24 hours before sowing
Optimum Temperature to Germinate: 70–85°F (21–29°C)
Germination Time: 10-45 days
How to Sow
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Sow seeds on surface of moist, well-draining seed-starting mix
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Press gently; do not bury (light aids germination)
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Place under grow lights 12-16 hours per day.
Post-Germination Care
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Keep soil moist but not soggy
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Humidity: Use a humidity dome or clear cover to maintain consistent moisture during germination. Open the dome BRIEFLY once per day to allow fresh air in and reduce mold risk. Remove the dome entirely once seedlings emerge.
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Gradually acclimate seedlings to full sun
Growing Tips
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Transplant when seedlings have 2–3 sets of true leaves
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Space plants 20–30 cm (8–12 in) apart
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Thrives in full sun and rich, well-draining soil
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Water regularly; do not allow soil to dry out completely
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Feed with balanced fertilizer during active growth
Additional Notes
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Suitable for containers or garden beds
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Lemongrass is a tender perennial — protect or bring indoors in cold climates
Enjoy growing your own fresh lemongrass!