How to Grow Cilantro Microgreens from Seed: Complete Growing Guide
By Bryan, Microgreens Farmer at Wind River GreensQuick answer: You can grow cilantro microgreens from seed to harvest in just 10-14 days, making them one of the fastest and most beginner-friendly microgreens to cultivate. These tender greens deliver concentrated cilantro flavor without the overwhelming intensity of mature leaves, and they contain 4-40 times more nutrients than full-grown cilantro. Unlike outdoor cilantro that bolts in heat, microgreens give you consistent year-round harvests with minimal space and equipment.
Growing cilantro microgreens from seed is one of the most rewarding ways to add fresh, zesty flavor to your meals year-round. These tender young greens pack all the bold taste of mature cilantro into delicate, nutrient-dense leaves that are ready to harvest in just 10-14 days.
Unlike growing full-size cilantro plants that can bolt in hot weather, cilantro microgreens give you consistent harvests regardless of the season. They're perfect for beginners and experienced growers alike, requiring minimal space and equipment while delivering maximum flavor.
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Why Choose Cilantro Microgreens?
Cilantro microgreens offer several advantages over their full-grown counterparts. They're incredibly fast to grow, taking less than two weeks from seed to harvest compared to 45-70 days for mature cilantro.
The flavor is intensely concentrated in these young leaves. You'll get that distinctive cilantro taste without the sometimes overwhelming punch of mature leaves. This makes them perfect for people who find regular cilantro too strong.
From a nutritional standpoint, microgreens are powerhouses. Studies show they can contain 4-40 times more nutrients than their mature counterparts, making cilantro microgreens an excellent source of vitamins A, C, E, and K.
What You'll Need to Get Started
Before diving into the growing process, gather these essential supplies:
Seeds: Look for cilantro seeds specifically labeled for microgreen production. Regular gardening cilantro seeds work too, but microgreen varieties are often treated for better germination rates.
Growing medium: Coconut coir, peat moss, or a quality potting mix all work well. Avoid garden soil, which can contain harmful bacteria and doesn't provide the right texture for microgreens.
Containers: Use shallow trays with drainage holes, about 1-2 inches deep. Recycled produce containers work perfectly, or invest in purpose-made microgreen trays.
Weight for pressing: A second tray or books will help during the germination phase by applying gentle pressure to encourage root development.
Water and misting bottle: You'll need clean water for initial soaking and a spray bottle for daily misting.
Step-by-Step Growing Process
Step 1: Prepare Your Seeds
Start by measuring out your cilantro seeds. You'll want about 1-2 tablespoons of seeds per 10x20 inch tray, depending on how dense you want your microgreens.
Cilantro seeds benefit from a pre-planting soak, though it's not absolutely necessary. Soak them in room temperature water for 8-12 hours to improve germination rates. Some growers skip this step with success, but soaking generally leads to more uniform sprouting.
After soaking, drain and rinse the seeds thoroughly. They're now ready for planting.
Step 2: Set Up Your Growing Medium
Fill your growing tray with about 1 inch of your chosen growing medium. The surface should be level and slightly compressed - not packed tight, but firm enough that seeds won't sink too deeply.
Moisten the growing medium thoroughly but not to the point of being waterlogged. It should feel like a wrung-out sponge. At Wind River Greens, we've found that proper moisture at this stage sets the foundation for healthy growth.
Create a smooth, even surface for seed distribution. Any major bumps or valleys will lead to uneven growth later on.
Step 3: Plant Your Seeds
Distribute the cilantro seeds evenly across the moistened growing medium. Aim for good coverage without seeds piling on top of each other. They should be touching but not heavily overlapped.
Gently press the seeds into the growing medium using your hand or the bottom of another tray. This ensures good seed-to-soil contact, which is crucial for germination.
Unlike some microgreens, cilantro seeds don't need to be covered with additional growing medium. The initial pressing is sufficient.
Step 4: Create the Blackout Period
Cover your planted tray with another tray or a piece of cardboard to create darkness. This "blackout period" is essential for cilantro microgreens, encouraging strong stem development and preventing premature leaf growth.
Place a light weight on top of the cover - another tray filled with water works well. This gentle pressure encourages the seeds to develop strong roots and stems.
Keep the seeds in this dark, weighted environment for 3-4 days. During this time, check daily and mist lightly if the surface appears to be drying out.
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Step 5: Monitor Germination
After 2-3 days, you should see signs of germination. Lift the cover briefly to check progress, but don't leave it exposed to light yet.
The seeds will develop white root systems first, followed by pale yellow stems pushing upward. This is exactly what you want to see during the blackout period.
Continue the blackout period until the stems are about 1 inch tall and starting to push against the cover. This usually takes 3-4 days total.
Step 6: Introduce Light
Once your cilantro microgreens have reached about 1 inch in height, it's time to remove the cover and introduce them to light. Choose a location with bright, indirect light or use grow lights.
The stems will initially be pale yellow or white - this is normal. They'll begin developing green color within 24-48 hours of light exposure.
If using grow lights, position them 12-18 inches above the microgreens and provide 12-16 hours of light daily. Natural light from a sunny window works well too, just avoid direct sunlight which can be too intense.
Step 7: Daily Care and Maintenance
Water management is crucial during the growing phase. Check your microgreens daily and mist the surface when the top layer of growing medium starts to look dry.
Water from the bottom when possible by adding water to the drainage tray rather than misting from above. This prevents disturbing the delicate roots and reduces the risk of mold.
Good air circulation is important for preventing fungal issues. A small fan on low speed, positioned to create gentle air movement, can help significantly.
Watch for any signs of mold or unusual odors, which indicate problems with moisture or air circulation. Healthy cilantro microgreens should smell fresh and green.
Harvesting Your Cilantro Microgreens
Cilantro microgreens are typically ready to harvest 10-14 days after planting. Look for well-developed first true leaves - these are the small serrated leaves that appear after the initial seed leaves.
The microgreens should be 2-3 inches tall with vibrant green color and that distinctive cilantro aroma. The stems should be sturdy enough to stand upright without support.
To harvest, use clean scissors to cut the stems just above the growing medium. Cut only what you plan to use immediately for the best flavor and longest shelf life.
After harvesting, rinse the microgreens gently in cool water and pat dry with paper towels or use a salad spinner. They're now ready to enjoy or store.
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Storing and Using Your Harvest
Fresh cilantro microgreens can be stored in the refrigerator for 7-10 days when properly handled. Place them in a container lined with paper towels to absorb excess moisture.
For the best flavor, use them as soon as possible after harvesting. The delicate leaves can wilt quickly, so gentle handling is important.
These microgreens are incredibly versatile in the kitchen. Add them to tacos, salads, soups, and sandwiches just like you would regular cilantro. They're also excellent as a garnish for Mexican and Asian dishes.
Try incorporating them into homemade salsas, guacamole, or chimichurri for an extra burst of fresh flavor. Their tender texture makes them perfect for dishes where regular cilantro might be too tough.
Troubleshooting Common Issues
Slow or poor germination: This usually indicates old seeds or insufficient moisture. Make sure your seeds are fresh and the growing medium stays consistently moist during the blackout period.
Mold growth: Excess moisture and poor air circulation are the main culprits. Reduce watering frequency and ensure good ventilation around your growing area.
Leggy, weak stems: This typically results from insufficient light or keeping the microgreens in darkness too long. Introduce light as soon as stems reach 1 inch in height.
Yellowing leaves: Usually caused by overwatering or poor drainage. Allow the growing medium to dry slightly between waterings and ensure your trays have adequate drainage holes.
Uneven growth: Often due to uneven seed distribution or an unlevel growing surface. Take care to distribute seeds evenly and level your growing medium before planting.
Tips for Continuous Harvests
To enjoy fresh cilantro microgreens year-round, start new trays every 7-10 days. This staggered planting approach ensures you always have fresh microgreens ready when your current harvest is used up.
Keep detailed notes about your growing conditions, including temperature, humidity, and light levels. This information helps you replicate successful grows and troubleshoot any problems.
Consider growing cilantro microgreens alongside other varieties like radish, broccoli, or pea shoots for a diverse selection of flavors and textures. Each variety has slightly different growing requirements, but they can often share the same growing space.
Experiment with different seed sources to find varieties that perform best in your specific growing conditions. Some cilantro varieties are bred specifically for microgreen production and may offer better germination rates or flavor.
Climate and Temperature Considerations
Cilantro microgreens perform best when grown at temperatures between 60-75°F (15-24°C). Unlike outdoor cilantro that struggles in extreme temperatures, microgreens give you more control, but temperature still matters for optimal growth.
In summer months, keep your growing trays away from direct sunlight and hot windows. Temperatures above 80°F can cause poor germination and bitter-tasting greens. Use fans for air circulation if your growing space gets warm.
Winter growing presents different challenges. Cold temperatures below 55°F will slow germination significantly, sometimes doubling your harvest time. Consider using a heat mat set to 65-70°F during the first 3-4 days of germination, then remove it once seedlings emerge.
Humidity levels between 40-60% work best. Too much humidity encourages mold growth, while too little causes seeds to dry out. If you live in a very dry climate, cover your trays with a damp cloth during germination, checking daily to prevent over-moistening.
Common Problems and Quick Fixes
Even experienced growers encounter issues with cilantro microgreens. Here's how to handle the most frequent problems:
Poor germination rates: This usually means old seeds or improper moisture. Cilantro seeds lose viability after 2-3 years, so check your seed date. If germination is patchy after 4 days, your seeds may be too old or the growing medium too dry.
Fuzzy white growth: Not all white fuzz is mold. Cilantro seeds naturally produce root hairs that look like white cotton. True mold appears gray-green and smells musty. Root hairs disappear with gentle misting, while mold spreads when disturbed.
Leggy, pale seedlings: This indicates insufficient light. Move trays closer to your light source or increase daily light exposure to 12-16 hours. Cilantro microgreens need bright light once they emerge from their blackout period.
Bitter or strong flavor: Harvest earlier, around day 8-10 instead of waiting the full 14 days. Hot growing conditions also intensify the flavor, so check your temperature.
Maximizing Your Harvest Efficiency
Smart timing and setup choices can significantly boost your cilantro microgreen production without extra work.
Start new trays every 3-4 days for continuous harvests. This staggered approach ensures you always have fresh microgreens ready while others are growing. Mark each tray with the planting date using masking tape.
Dense seeding produces more greens per tray, but there's a limit. Too many seeds create overcrowding, leading to weak stems and increased disease risk. Aim for seeds touching but not overlapping when spread across your growing medium.
Reuse your growing medium for 2-3 cycles if it's coconut coir or peat moss. Remove old roots, add 25% fresh medium, and remix. This cuts costs while maintaining good growing conditions.
Save the best-looking microgreens for eating fresh, and use any that seem past their prime for cooking. Cilantro microgreens work well in soups, stir-fries, and sauces where their concentrated flavor really shines.
Consider growing both cilantro and other quick microgreens like radish or arugula in the same timeframe. This gives you variety in harvests and helps you learn which growing conditions work best in your specific setup.
Conclusion
Growing cilantro microgreens from seed is an excellent way to enjoy fresh, flavorful greens year-round with minimal time and space investment. With proper seed preparation, consistent moisture management, and attention to light requirements, you'll be harvesting delicious cilantro microgreens in less than two weeks. Start your first tray today and discover why these nutrient-packed microgreens have become a favorite among home growers and chefs alike.