How to Grow Kale Microgreens

How to Grow Kale Microgreens: A Comprehensive Guide

Discover the expert techniques on how to grow kale microgreens effectively. Follow our step-by-step guide and tips to achieve healthy and vibrant microgreens.

Growing your own kale microgreens is a rewarding and nutritious endeavor that allows you to enjoy fresh, vibrant greens in just a matter of days. These tiny versions of mature kale pack a punch of nutrients and flavor, making them an excellent addition to salads, sandwiches, and smoothies. In this guide, we’ll walk you through the step-by-step process of growing kale microgreens at home. Whether you’re a seasoned gardener or a beginner, these tips and insights will help you cultivate healthy and delicious microgreens.

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How to Grow Kale Microgreens

Getting Started with Kale Microgreens

To start your kale microgreens journey, gather the necessary materials such as a growing container, high-quality kale seeds, a growing medium (like potting mix or coconut coir), and a spray bottle for watering. Creating a dedicated growing space with proper lighting and temperature control is crucial for successful growth.

Selecting the Right Kale Seeds

How to Grow Kale Microgreens
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When you’re in the process of picking out kale seeds for your microgreens, it’s a smart move to go for the types of seeds that have been clearly marked and labeled as being well-suited for growing microgreens. These specific seed varieties have been meticulously developed to showcase speedy growth and feature delicate leaves, characteristics that render them exceptionally well-suited for harvesting when they’re still in their nascent stages of growth.

Preparing the Growing Medium

Before you begin, it’s crucial to make sure that the growing medium you’ve chosen has excellent drainage capabilities and is completely devoid of any potential contaminants. Once you’ve confirmed this, proceed to fill up your chosen growing container with the selected medium, ensuring that the surface is leveled gently and evenly. It’s important to then moisten the medium thoroughly before proceeding to sow the seeds.

Planting Kale Seeds

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Spread the kale seeds evenly and densely across the moistened growing medium. Gently press the seeds into the medium without burying them. Cover the seeds with a thin layer of the growing medium to encourage proper germination.

Providing Optimal Light

Place the growing container in a well-lit area, preferably near a south-facing window or under grow lights. Kale microgreens require ample light to grow properly. If using artificial lights, keep them 2-3 inches above the greens.

Watering and Humidity

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Use a spray bottle to mist the microgreens regularly, keeping the growing medium consistently moist but not waterlogged. Maintain a humid environment by covering the container with a clear lid or plastic wrap until the seeds germinate.

Managing Air Circulation

Adequate air circulation plays a pivotal role in preventing the onset of mold and fostering robust growth in your kale microgreens. Once your seeds have successfully germinated, it’s time to remove any covers that might be in place and grant your microgreens the ventilation they require. A useful technique to enhance the airflow is to introduce a small fan set to a low setting. This gentle breeze not only discourages the growth of mold but also encourages the strengthening of your microgreens as they sway and adjust to the breeze. Remember, a steady flow of air promotes healthier, more resilient growth.

Preventing Pests and Diseases

Vigilance is key when it comes to protecting your microgreens from pests and diseases. Make it a routine to closely examine your microgreens for any indications of unwelcome visitors or potential diseases. If you happen to identify any issues, it’s crucial to take swift action. Opt for organic methods of pest control or consider using neem oil, a natural remedy known for its effectiveness against a range of pests. By addressing these concerns promptly, you can ensure the health and vitality of your kale microgreens, setting the stage for a successful growth journey.

Harvesting Kale Microgreens

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Once your kale microgreens have reached a height of about 2-3 inches and developed their first set of true leaves, they’re ready to be harvested. Use clean scissors to snip the greens just above the soil line.

Key Factors for Successful Growth

Temperature and Environment

Maintain a temperature of around 65-75°F (18-24°C) for optimal kale microgreens growth. Avoid extreme temperature fluctuations, as they can affect the germination and growth process.

Choosing the Right Container

Select shallow containers with good drainage to prevent waterlogging. This helps avoid root rot and ensures that excess water can escape, keeping the growing medium appropriately moist.

Importance of Good Drainage

Improper drainage can lead to root rot and other issues. Elevate your growing container slightly by placing it on a rack or tray to ensure proper water drainage.

Seed Density and Spacing

Sow kale seeds densely but avoid overcrowding. Overcrowding can lead to poor air circulation and increased risk of mold. Thin out excess seedlings if they appear too crowded.

Choosing the Best Growing Medium

A high-quality growing medium is essential for healthy microgreens. Coconut coir, potting mix, or specialized microgreens growing mats can provide the necessary nutrients and structure for the plants.

Troubleshooting Common Issues

Mold and Mildew Prevention

To prevent mold and mildew, ensure proper ventilation and avoid over-watering. A fan and good drainage can help control humidity levels and minimize the risk of fungal growth.

Leggy Microgreens

Leggy microgreens are a result of insufficient light. Make sure your microgreens receive adequate light intensity, and adjust the light source’s height accordingly.

Yellowing Leaves

Yellowing leaves can indicate nutrient deficiencies or over-watering. Ensure proper watering practices and consider adding a diluted liquid fertilizer to provide necessary nutrients.

Bitter Tasting Microgreens

Bitterness in microgreens can be caused by stress due to temperature fluctuations or inadequate water. Maintain consistent growing conditions to prevent bitterness.

FAQs About Growing Kale Microgreens

How long does it take to grow kale microgreens?

The timeline for growing kale microgreens typically spans around 7 to 14 days. However, the precise duration can be influenced by factors such as temperature variations and the specific kale variety you’re cultivating.

Can I use regular kale seeds for microgreens?

While it is possible to use regular kale seeds for microgreens, it’s recommended to opt for seeds specifically labeled for microgreens. These designated seeds are bred for their rapid growth and tender leaves, ensuring a more successful microgreens experience.

What kind of light do kale microgreens need?

Kale microgreens thrive under bright, indirect light. If you’re relying on artificial lighting, consider utilizing full-spectrum grow lights for optimal results. This light spectrum closely resembles natural sunlight and supports healthy growth.

Can I reuse the growing medium?

While it might be tempting to recycle the growing medium, it’s advised to use fresh medium for each batch of microgreens. This precaution helps prevent the potential spread of diseases and ensures a clean and favorable environment for your kale microgreens to flourish.

Should I soak kale seeds before planting?

Soaking kale seeds for a period of 4 to 6 hours before planting can indeed be beneficial. This soaking process can encourage quicker and more uniform germination, setting the stage for a successful microgreens crop.

Are kale microgreens as nutritious as mature kale?

Kale microgreens are indeed packed with nutrients, offering a concentrated dose of vitamins, minerals, and antioxidants. While they may not match the nutrient content of fully mature kale, their early-stage development still provides an impressive nutritional profile that can be a valuable addition to your diet.

What kind of container is best for growing kale microgreens?

Opt for shallow containers with good drainage when growing kale microgreens. This ensures that excess water can escape, preventing waterlogging that can harm your microgreens’ development.

Can I grow kale microgreens without soil?

Yes, you can grow kale microgreens without soil. Consider using alternatives like coconut coir or hydroponic systems, which provide the necessary support and moisture for your microgreens’ growth.

How often should I water my kale microgreens?

Regular misting is essential to keep the growing medium consistently moist. Aim to mist the microgreens at least once or twice a day to maintain proper moisture levels.

What’s the ideal temperature for growing kale microgreens?

Kale microgreens thrive in temperatures around 65-75°F (18-24°C). Maintaining a stable and favorable temperature range supports their growth and prevents stress.

Can I eat the cotyledons of kale microgreens?

Yes, the cotyledons (the first leaves to appear) of kale microgreens are edible and contain valuable nutrients. They contribute to the flavor and nutrition of your microgreens.

Can I harvest only a portion of my kale microgreens and let the rest continue growing?

Absolutely. You can practice cut-and-come-again harvesting with kale microgreens. Snip the desired amount above the soil line, allowing the remaining microgreens to continue growing for subsequent harvests.

How do I store harvested kale microgreens?

After harvesting, gently pat the microgreens dry and store them in an airtight container lined with a paper towel. Place them in the refrigerator, and they should stay fresh for several days.

Can I use regular garden soil for growing kale microgreens?

Using regular garden soil is not recommended for growing kale microgreens. Garden soil can be too dense and may contain contaminants. Opt for well-draining, sterile growing mediums for optimal results.

Can I grow kale microgreens indoors year-round?

Yes, you can cultivate kale microgreens indoors year-round as long as you provide the necessary light, temperature, and care they require. Indoor cultivation allows you to enjoy fresh greens regardless of the season.

Can I use leftover microgreens as compost?

Absolutely! If you have leftover microgreens that you didn’t harvest, you can compost them to enrich your garden soil with valuable nutrients.


Growing kale microgreens is an enjoyable and rewarding process that brings fresh and nutrient-packed greens to your table in no time. By following the steps outlined in this guide and understanding the key factors for successful growth, you’ll be on your way to cultivating vibrant and delicious kale microgreens. Remember to monitor their progress, address any issues promptly, and savor the joy of growing your own nutritious greens.

Reference: Grow Daddy