How to Grow Microgreens Hydroponically: A Step-by-Step Guide

How to Grow Microgreens Hydroponically: A Step-by-Step Guide

Microgreens, the tiny but nutrient-packed seedlings of edible vegetables and herbs, have gained popularity for their vibrant flavors and concentrated nutritional value.

Growing microgreens hydroponically offers several advantages, including faster growth, increased yields, and the ability to cultivate them in small spaces. In this comprehensive guide, we will walk you through the step-by-step process of growing microgreens hydroponically, allowing you to enjoy a continuous supply of fresh and flavourful greens.

Step 1: Choose Your Microgreen Varieties

Select the microgreen varieties you want to grow hydroponically. Popular choices include broccoli, kale, radish, sunflower, and pea shoots. Consider the taste, growth characteristics, and nutritional value of each variety to suit your preferences.

Step 2: Prepare Your Hydroponic System

There are various hydroponic systems suitable for growing microgreens, including tray systems, vertical towers, or DIY setups. Ensure your system provides adequate drainage and proper water circulation. Clean and sanitise the system before use to prevent any potential contamination.

Step 3: Select the Growing Medium

For hydroponic microgreen cultivation, choose a growing medium that retains moisture while allowing the roots to breathe. Common options include rockwool, coco coir, perlite, or vermiculite. Ensure the medium is clean and free from any contaminants.

Step 4: Germinate the Seeds

Pre-soak the microgreen seeds in water for a few hours or overnight to kickstart the germination process. Spread the seeds evenly across the growing medium, ensuring proper spacing. Gently press them into the medium without burying them too deeply.

Step 5: Provide Adequate Light

Microgreens require sufficient light to grow properly. Place the trays or containers in a well-lit area near a window where they can receive natural sunlight. Alternatively, use grow lights specifically designed for plant growth to provide the required light spectrum and intensity. Aim for 12-16 hours of light per day.

Step 6: Maintain Optimal Temperature and Humidity

Microgreens thrive in a temperature range of 65-75°F (18-24°C). Ensure proper ventilation to prevent excessive heat buildup. Maintain a relative humidity level of around 40-60% to promote healthy growth and prevent mold or disease issues.

Step 7: Watering and Nutrient Solution

Water your microgreens carefully, ensuring that the growing medium remains moist but not waterlogged. Avoid overwatering, as it can lead to root rot. Use a nutrient solution specifically formulated for hydroponic growing, following the instructions on the package. Monitor the pH level of the solution and adjust it if necessary.

Step 8: Monitor Growth and Harvest

Regularly inspect your microgreens for signs of growth. As they develop their first true leaves, usually within 1-3 weeks, they are ready for harvest. Using clean scissors or a sharp knife, cut the microgreens just above the soil level. Rinse them gently and allow them to dry before storage or consumption.

Step 9: Storage and Enjoyment

Store harvested microgreens in airtight containers or bags in the refrigerator to maintain freshness. Consume them within a few days for the best flavour and nutritional value. Incorporate microgreens into salads, sandwiches, wraps, stir-fries, or as garnishes to enhance the taste and appearance of your dishes.


Growing microgreens hydroponically is a rewarding and efficient way to enjoy a constant supply of fresh and nutritious greens. By following these steps and providing the right growing conditions, you can cultivate a variety of microgreen varieties throughout the year. Embrace the joys of hydroponic gardening and elevate your culinary creations with these delightful and vibrant microgreens.

Remember to experiment with different microgreen varieties and adjust the growing conditions as needed. Each variety may have slightly different requirements in terms of light, temperature, and watering. Stay attentive to their growth progress, ensuring they receive the ideal conditions for optimal development.

Hydroponic microgreen cultivation offers a space-saving and efficient way to grow nutrient-dense greens in any season. It also minimises the risk of pests, weeds, and soil-borne diseases. With the right system and care, you can enjoy a continuous harvest of fresh microgreens that will add flavour, colour, and nutrition to your meals.

So, roll up your sleeves, gather your hydroponic supplies, and embark on the exciting journey of growing microgreens hydroponically. Whether you're a seasoned gardener or a beginner, the joy of seeing those tiny seeds transform into vibrant greens will be immensely rewarding.

Happy growing and savour the delectable flavours of your homegrown microgreens!

Back to blog