Growing microgreens has become an increasingly popular farming practice due to their nutritional value and low maintenance requirements. However, one question that often arises is which method provides the best results: soil or hydroponic trays? Understanding the differences, benefits, and downsides of each system is critical in deciding which method is right for your microgreens.
Microgreens, sometimes referred to as vegetable confetti, are young vegetable greens that are approximately 1–3 inches tall. They have an aromatic flavor and concentrated nutrient content and come in a variety of colors and textures. Microgreens are considered baby plants, falling somewhere between a sprout and baby green.
Soil-based and hydroponic methods are the two primary ways of growing microgreens. The fundamental difference between the two is that soil-based microgreens are grown in soil, while hydroponic microgreens are grown in a nutrient-rich water solution.
Soil-Based Microgreens
The soil-based method of growing microgreens involves planting seeds in soil, watering the soil, and then waiting for the seeds to sprout and grow into microgreens. The soil provides the microgreens with all the nutrients they need to grow.
Much of the success of soil-based microgreens relies on the soil quality. High-quality soil will yield a healthy, bountiful crop of microgreens. It includes valuable bacteria, fungi, and other organisms that nourish the microgreen crop. Soil also contains micronutrients that are essential for microgreens growth, including zinc, copper, iron, and manganese.
In terms of taste, many farmers believe soil-grown microgreens to have a more robust and complex flavor. The soil system also mimics the natural growing environment, which allows the microgreens to tap into their inherent genetic potential fully.
On the downside, soil-grown microgreens require more attention to watering. Over or under watering can easily damage the microgreens. Moreover, pests and diseases are more likely to appear in soil-based systems.
Hydroponic Microgreens
Hydroponic farming has gained popularity in recent years, particularly in urban areas with space constraints and a desire to produce fresh, local produce. The key advantage to hydroponic trays is their cleanliness and low-maintenance.
The hydroponic method involves placing the microgreen seeds on top of a growing medium — usually a fiber mat — and then exposing those seeds to water and light. The water contains essential nutrients for the seeds to germinate and grow into microgreens. This setup negates the need for soil.
Being soil-less, hydroponic microgreens are less prone to pests and diseases, which makes them easier to manage. Moreover, they require less space and can be grown year-round regardless of outdoor weather conditions. Another undeniable advantage is that hydroponics uses less water compared to traditional soil gardening, making it a more sustainable method.
On the flip side, setting up a hydroponic system can be more expensive initially. The expertise required to manage nutrient solutions and pH can be a hurdle for many farmers. And while hydroponic microgreens can be highly efficient, they do miss out on helpful soil microbes and minerals, which can subtly affect the taste and nutritional content of the greens.
Soil vs. Hydroponic Trays
The decision between soil and hydroponic trays depends heavily on the individual grower’s preferences and conditions. Soil-based trays might be preferable to those who want to use traditional farming methods and prioritize the flavor complexity of their microgreens. In contrast, hydroponic trays might appeal to growers looking for a clean, efficient, and modern method to grow their microgreens.
To decide which is right for your microgreens, consider your available resources, knowledge base, and preference. If you have easy access to quality soil and enjoy the process of soil-based gardening, it might be the best choice for you. On the other hand, if you are growing in an urban environment with limited space or prefer a high-tech approach to gardening, hydroponics might be your best bet.
Both methods can yield healthy, vibrant microgreens when applied properly. The differences lie in the approach to farming, the initial investment required, the maintenance level, and the taste and nutritional content of the final product. No matter what you choose, growing microgreens is a rewarding endeavor that yields nutritionally-rich food at home or commercially. They are a delicious way to integrate more greens into your diet and offer an excellent opportunity to experiment with growing your own food.
