Growing Hydroponic Microgreens | A Step-By-Step Guide

Updated on April 25, 2023

If you’re looking to start growing microgreens hydroponically, you’re in for a treat. Hydroponic microgreens are easy to grow, take up less space than traditional gardening, and can provide a nutritious addition to any meal. In this article, we’ll cover everything you need to know about growing hydroponic microgreens, from the basics to advanced techniques.

Basics of Growing Hydroponic Microgreens

Before we dive into the specifics of growing hydroponic microgreens, let’s cover some of the basics. Microgreens are essentially young plants that are harvested just as their first leaves, called cotyledons, begin to emerge. They’re packed with flavor and nutrients, and can be grown from a variety of seeds, including herbs, vegetables, and even flowers.

When it comes to growing microgreens hydroponically, you’ll need a few supplies. First and foremost, you’ll need a container to hold your growing medium and plants. This can be anything from a small tray to a large tub, depending on how many microgreens you want to grow. You’ll also need a growing medium, such as coco coir, peat moss, or vermiculite, to support your plants. Finally, you’ll need a nutrient solution to feed your plants, as well as a light source to help them grow.

Pros and Cons of Growing Microgreens Hydroponically

Growing microgreens hydroponically is a fun and rewarding hobby that can provide you with a constant supply of fresh, nutritious greens. Whether you’re looking to add some flavor to your salads or want to experiment with different herbs and spices, hydroponic microgreens are a great way to get started.

There are several pros and cons to growing microgreens hydroponically.

Pros:

Faster growth: Hydroponic microgreens typically grow faster than those grown in soil, as they have direct access to water and nutrients.
Space-saving: Hydroponic systems take up less space than traditional gardening, making them ideal for those with limited space.
Year-round growing: With hydroponic systems, you can grow microgreens year-round, regardless of the weather outside.
Nutrient-dense: Hydroponic microgreens are often more nutrient-dense than those grown in soil, as they’re grown in a controlled environment with precise nutrient solutions.

Cons:

Upfront cost: Setting up a hydroponic system can be more expensive than traditional gardening, as you’ll need to purchase equipment such as pumps, timers, and grow lights.
Technical knowledge: Hydroponic gardening requires a bit of technical knowledge, including understanding pH levels and nutrient solutions.
Power outage risk: If you experience a power outage, your hydroponic system may be affected, as it relies on electricity to function.
Maintenance: Hydroponic systems require regular maintenance, including cleaning and monitoring nutrient levels.

Choosing a Growing Medium for Hydroponic Microgreens

When it comes to choosing a growing medium for hydroponic microgreens, there are several options to consider.

Coco coir:

Coco coir is a popular choice among hydroponic growers, as it’s made from the fibrous husks of coconuts and is a sustainable and renewable resource. It’s also lightweight and pH-neutral, making it a great choice for hydroponic gardening.

Vermiculite:

Vermiculite is another popular growing medium, as it’s lightweight, pH-neutral, and has excellent water retention. However, it’s important to note that vermiculite can contain asbestos, so it’s important to purchase from a reputable source.

Peat moss:

Peat moss is a popular growing medium in traditional gardening, but can also be used in hydroponic systems. It’s pH-neutral, has good water retention, and is also lightweight. However, it’s important to note that peat moss is not a sustainable resource, as it’s harvested from wetlands.

Rockwool:

Rockwool is a popular choice among hydroponic growers, as it’s made from spun basalt rock and is pH-neutral. It’s also sterile and provides excellent water retention. However, it’s important to wear gloves and a mask when handling rockwool, as it can be irritating to the skin and lungs.

Fertilizing Hydroponic Microgreens

Yes and no. Fertilizer is a quick hit way of getting nutrients to plants. In a hydroponic system, plants are grown in a nutrient-rich solution that provides all of the essential minerals and nutrients they need to grow. The Water mixture used in your hydroponic system will be the fertilizer provided you add and mix the proper amount. You’ll need to purchase a hydroponic fertilizer that’s specifically formulated for microgreens, as they have different nutrient requirements than other plants.

It’s important to monitor the nutrient levels in your hydroponic system regularly, as imbalanced nutrient levels can lead to stunted growth or nutrient deficiencies. You’ll also need to adjust the pH levels of your nutrient solution, as microgreens prefer a slightly acidic environment.

Why Choose Hydroponic Microgreens Over Soil-Grown Microgreens?

While both soil-based and hydroponic growing methods have their advantages and disadvantages, hydroponic microgreens have some unique benefits that make them a great choice for home gardeners.

Firstly, hydroponic systems take up less space than traditional gardening, making them ideal for those with limited space. This can be particularly useful for those living in apartments or urban areas where outdoor space is limited.

Hydroponic systems are also more efficient than soil-based systems, as they provide plants with direct access to water and nutrients. This can lead to faster growth and higher yields, which is particularly useful for those looking to grow microgreens for commercial purposes.

Additionally, hydroponic systems allow you to grow microgreens year-round, regardless of the weather outside. This means you can enjoy fresh, nutrient-dense greens no matter the season.

Are Microgreens Better Grown in Soil or Water?

There’s no easy answer to this question, as both soil-based and hydroponic growing methods have their advantages and disadvantages. Soil-based systems are often easier to set up and require less technical knowledge, while hydroponic systems can provide faster growth and higher yields.

Ultimately, the best growing method for microgreens will depend on your personal preferences and growing conditions. If you have limited space or want to grow microgreens year-round, hydroponic systems may be a better option. If you prefer a more traditional approach to gardening or have access to high-quality soil, soil-based systems may be a better fit.

Choosing the Right Hydroponic System for Microgreens

When it comes to choosing a hydroponic system for growing microgreens, there are several factors to consider. Some of the most popular systems for growing microgreens include:

Deep Water Culture:

This system involves suspending plants in a nutrient-rich solution and providing them with aeration through an air pump.

Ebb and Flow:

In an ebb and flow system, plants are grown in a tray that is periodically flooded with nutrient solution before draining back into a reservoir.

Drip Irrigation:

This system involves providing a slow and steady drip of nutrient solution directly to the roots of the plants.

Aeroponics:

In an aeroponic system, plants are suspended in air and misted with a nutrient solution.

All of these systems can be effective for growing microgreens, and the best system for you will depend on your growing goals, available space, and budget.

Best Microgreens to Grow Hydroponically

Many different microgreens can be grown hydroponically, but some varieties are better suited to this growing method than others. Some of the best microgreens to grow hydroponically include:

Arugula
Basil
Chives
Cilantro
Mustard greens
Radish
Sunflower
Wheatgrass

These varieties tend to be fast-growing, produce high yields, and have relatively low nutrient requirements, making them ideal for hydroponic growing.

How to Start Growing Hydroponic Microgreens

If you’re ready to start growing microgreens hydroponically, here’s a step-by-step guide to get you started:

Choose your hydroponic system: As we discussed earlier, there are several types of hydroponic systems to choose from. Consider your space, budget, and growing goals when selecting the right system for you.
Select your growing medium: Once you’ve chosen your hydroponic system, you’ll need to select a growing medium. Some popular options include peat moss, rockwool, and coconut coir.
Purchase your seeds: Choose the microgreen seeds you want to grow. Some popular options include arugula, basil, chives, and cilantro.
Set up your hydroponic system: Set up your hydroponic system according to the manufacturer’s instructions.
Plant your seeds: Plant your seeds according to the instructions on the seed packet. You’ll need to keep your growing medium moist and ensure that your nutrient solution is properly balanced.
Monitor and adjust: Monitor your plants regularly, adjusting nutrient levels and pH as needed. Be sure to keep an eye out for any signs of nutrient deficiencies or pest infestations.

Tips for Growing Hydroponic Microgreens

Here are some tips to help you get the most out of your hydroponic microgreens:

Use high-quality seeds: The quality of your seeds will have a direct impact on the quality of your microgreens. Choose seeds from a reputable supplier and look for varieties that are specifically designed for hydroponic growing.
Monitor nutrient levels and pH: Keep a close eye on your nutrient levels and pH levels, as imbalances can lead to stunted growth or nutrient deficiencies.
Keep your growing medium moist: Microgreens require consistent moisture to grow properly. Keep your growing medium moist but not waterlogged, and be sure to provide adequate drainage.
Provide adequate light: Microgreens require plenty of light to grow. Consider using grow lights or placing your hydroponic system near a sunny window.
Harvest at the right time: Microgreens are best harvested just as their cotyledons begin to emerge. Use sharp scissors to snip the stems just above the growing medium.

FAQs Regarding Growing Microgreens Hydroponically

What are microgreens?

Microgreens are essentially young plants that are harvested just as their first leaves, called cotyledons, begin to emerge. They’re packed with flavor and nutrients, and can be grown from a variety of seeds, including herbs, vegetables, and even flowers.

What microgreens grow best hydroponically?

Many different microgreens can be grown hydroponically, but some varieties are better suited to this growing method than others. Some of the best microgreens to grow hydroponically include arugula, basil, chives, cilantro, mustard greens, radish, sunflower, and wheatgrass.

Do hydroponic microgreens need fertilizer?

Yes, hydroponic microgreens do need fertilizer. In a hydroponic system, plants are grown in a nutrient-rich solution that provides all of the essential minerals and nutrients they need to grow. You’ll need to purchase a hydroponic fertilizer that’s specifically formulated for microgreens, as they have different nutrient requirements than other plants.

How long does it take to grow hydroponic microgreens?

The time it takes to grow hydroponic microgreens will depend on the variety you’re growing and the conditions in your hydroponic system. However, most microgreens will be ready to harvest in 1-3 weeks.

Can I reuse my hydroponic growing medium?

It’s possible to reuse your hydroponic growing medium, but it’s important to thoroughly clean and sterilize it between uses to prevent the spread of disease.

How do I prevent pest infestations in my hydroponic system?

Pest infestations can be a problem in hydroponic systems, so it’s important to take steps to prevent them. This can include sterilizing your equipment, using a fine mesh screen to cover your growing medium, and using natural pest control methods such as companion planting and introducing beneficial insects.

Conclusion

Growing hydroponic microgreens is a fun and rewarding hobby that can provide you with a constant supply of fresh, nutritious greens. With a bit of knowledge and the right equipment, you can easily set up your own hydroponic system and start growing microgreens in no time. So why not give it a try and enjoy the benefits of homegrown microgreens today?