If you’re looking to grow a high-value, low-maintenance crop with a fast turnaround, aquaponic microgreens might be the perfect option for you. These tiny, nutrient-packed plants have been gaining popularity in the world of sustainable farming due to their ability to grow quickly and efficiently in aquaponic systems. In this blog post, we’ll explore why microgreens are ideal for aquaponics, the benefits they offer, and how you can start growing them in your own system.

What Are Microgreens?

Microgreens are young plants that are harvested shortly after the first true leaves, or cotyledons, have fully developed. They are typically harvested when they are just 7 to 21 days old, depending on the type of plant. Microgreens come in various varieties, including arugula, basil, cilantro, mustard, pea shoots, radish, and sunflower, among others.

Despite their small size, microgreens pack a punch when it comes to flavor and nutritional value. They are often rich in vitamins, minerals, antioxidants, and enzymes, making them a popular choice for health-conscious consumers and culinary professionals alike.

Why Grow Microgreens in Aquaponics?

Aquaponics offers several advantages for growing microgreens. Here are some reasons why they thrive in an aquaponic system:

1. Fast Growth Cycle

Microgreens are well-known for their quick growth — some varieties can be ready for harvest in just 7 days! Aquaponic systems are perfect for accelerating this growth because the plants have continuous access to nutrients from fish waste, resulting in faster root development and overall growth.

In an aquaponic system, the plants receive a steady supply of essential nutrients such as nitrogen, phosphorus, and potassium, all of which contribute to healthy, rapid plant growth. This means you can grow multiple crops of microgreens throughout the year, maximizing your yield in a shorter amount of time.

2. Space Efficiency

Microgreens require very little space to grow, making them ideal for small-scale or indoor aquaponic systems. Whether you’re working with a small countertop system or a larger vertical aquaponics setup, microgreens can thrive in compact spaces.

You can even grow them in hydroponic trays or floating rafts, which makes them perfect for urban farms or anyone looking to grow fresh produce in limited space.

3. Minimal Input, High Yield

One of the key benefits of growing microgreens in an aquaponic system is the low maintenance required. The closed-loop nature of aquaponics means you don’t need to worry about constantly adding fertilizers or dealing with pests and diseases that typically affect soil-based crops.

The nutrient-rich water in an aquaponic system provides everything your microgreens need to thrive. Plus, the aquaponic ecosystem is highly efficient, so you can grow large quantities of microgreens with relatively little input and time.

4. No Soil, No Pesticides

Microgreens grown in aquaponic systems don’t require soil, which means they’re free from soil-borne pests, weeds, and diseases. This is particularly important in terms of food safety and sustainability, as it eliminates the need for synthetic pesticides or herbicides.

Since the growing environment is controlled, the plants are also less likely to be exposed to harmful chemicals and contaminants that can sometimes affect soil-grown crops.

Best Microgreens for Aquaponics

Not all microgreens are the same, and some varieties are better suited to aquaponic systems than others. Below are a few popular microgreens that grow well in aquaponics:

1. Pea Shoots

Pea shoots are one of the most popular and easiest microgreens to grow in aquaponics. They have a mild, sweet flavor and can be harvested in just 7-10 days. Pea shoots are also known for being high in vitamins A, C, and K, as well as folate and fiber.

2. Radish Greens

Radish microgreens have a spicy, peppery flavor, making them a great addition to salads and sandwiches. They grow quickly and are ready to harvest in about 7-10 days. Radish greens are rich in antioxidants, vitamins, and minerals, including vitamin C, calcium, and iron.

3. Sunflower Microgreens

Sunflower microgreens are highly nutritious and offer a mild, nutty flavor. They are packed with protein, fiber, and healthy fats, making them an excellent choice for boosting the nutritional value of any meal. Sunflower microgreens are typically harvested in 10-14 days.

4. Basil Microgreens

Basil is another popular microgreen, known for its aromatic flavor and versatility. It grows well in aquaponics systems and can be harvested in 14-21 days. Basil microgreens are rich in essential oils and antioxidants, and they add a burst of flavor to any dish.

5. Mustard Greens

Mustard greens have a tangy, spicy flavor, which makes them a great choice for adding a kick to dishes. These microgreens grow quickly and are ready for harvest in 7-10 days. Mustard greens are rich in vitamins A, C, and K, as well as folate and calcium.

6. Arugula Microgreens

Arugula microgreens are known for their peppery taste, making them a popular choice for adding spice to salads and garnishes. They grow quickly and are typically ready for harvest in 7-14 days. Arugula microgreens are also high in vitamins A, C, and K, as well as antioxidants.

How to Grow Microgreens in Aquaponics

Step 1: Set Up Your Aquaponic System

You don’t need a large or complex system to grow microgreens. A simple, small-scale aquaponic system like a media-based system or deep water culture (DWC) will work perfectly. Just make sure the system includes a fish tank for your aquatic life, a grow bed where your microgreens will grow, and a filtration system to keep the water clean and nutrient-rich.

Step 2: Select Your Microgreens and Plant

Choose the microgreens that are best suited for your system and climate. Use a growing medium like hydroton or coconut coir to place your seeds. In a media-based system, simply sprinkle the seeds evenly across the grow bed. If you’re using a floating raft system, you can spread the seeds in small trays with a light growing medium.

Step 3: Maintain the Water Quality

Monitor the water quality regularly, making sure the pH is between 6.0-7.0 and the nutrient levels are balanced. Microgreens prefer slightly acidic to neutral water, so adjust the pH as needed. Also, check for ammonia, nitrites, and nitrates to ensure a healthy environment for both your fish and your plants.

Step 4: Provide Adequate Lighting

Microgreens need sufficient light to grow, so place your system in a location with access to natural sunlight or use artificial grow lights if growing indoors. A 12-16 hour light cycle is ideal for most microgreens, with adequate light intensity to promote strong growth.

Step 5: Harvest Your Microgreens

Microgreens are usually ready to harvest in just 7 to 21 days. Harvest them by cutting the plants just above the soil or growing medium. Be sure to rinse them well before consuming.

Conclusion: Why You Should Grow Aquaponic Microgreens

Aquaponic microgreens are a fantastic addition to any sustainable farming setup. Not only are they quick-growing and nutrient-dense, but they also require minimal maintenance and space. By utilizing an aquaponic system, you can grow fresh, flavorful, and healthy microgreens year-round, making them a perfect crop for both beginner gardeners and experienced farmers.

Are you ready to give aquaponic microgreens a try? Whether you’re looking to add more greens to your diet or start a profitable business, aquaponics offers an efficient and sustainable way to grow these powerful little plants. Get started today and enjoy the benefits of fresh, homegrown microgreens!

🌱 What are your favorite types of microgreens to grow? Let us know in the comments below!