Microgreens, a recent innovation in urban farming, are miniature vegetable greens that boast a concentrated nutrient profile and offer a burst of flavor to salads, wraps, sandwiches, and smoothies. Their popularity stems not only from their health benefits but also from their relatively short growing cycle. With the right set of tools, it often takes between 7-10 days from sowing to harvest. Among the tools you need to grow high-quality microgreens, trays are at the core of this process. They play a crucial role in supporting steady growth, facilitating even distribution of water, and ultimately, guaranteeing a high-quality harvest.
This article delves into the world of microgreen trays. It explores different types of trays, their unique features, and how to choose the best tray for your needs, aiming to guide urban farmers in the journey of microgreen cultivation.
TYPES OF MICROGREEN TRAYS
Without Drain Holes: Such trays prove useful for bottom watering mechanisms. They hold the required amount of water and prevent leakage, thereby regulating the water supply to the microgreens. Hydroponic growing systems often use these trays to ensure enough water retention for the growing medium.
With Drain Holes: These trays provide excellent drainage and aeration for the microgreens. They are predominantly used in conventional or organic soil-based growing systems. The holes ensure excess water seep out, preventing waterlogging, and maintaining the health of the microgreens.
Mesh Bottom Trays: Mesh trays are highly beneficial for hydroponic growing systems. They provide the perfect balance of water access and aeration for the roots. Since the roots can directly absorb the water through the mesh, they tend to grow stronger and healthier.
CHOOSING THE BEST TRAYS FOR MICROGREENS
Durability: A long-lasting, sturdy tray, though slightly more expensive initially, will prove cost-effective in the long run. Opt for trays made from heavy-duty plastic that can withstand regular handling, are resistant to cracks or punctures, and maintain their structure over time.
Depth: The best depth for microgreen trays ranges between 1-2 inches. This is sufficient to support the root system of most microgreens. Deep trays can be burdensome as they require more growing medium without necessarily improving the yield.
Size: Standard microgreen trays measure 10×20 inches. This size is convenient for most growers as it fits nicely on standard shelving units and can be used in commercial growing stands. However, smaller trays might be more suitable for beginners or for those growing microgreens for personal use.
USEFUL FEATURES IN MICROGREEN TRAYS
Double-Tiered Trays: Some trays incorporate a two-tiered system, allowing the grower to bottom water the microgreens. The top tier has drainage holes through which the microgreens can draw water from the lower tray. This can prevent overwatering, a common problem that leads to the development of mold.
Black Versus White Trays: The color of the tray can influence the temperature of the growing medium. Black trays absorb heat and might be more suitable for colder climates, whereas white trays reflect heat and are better for warmer climates.
Stackable Trays: Stackable trays can put pressure on the seeds, helping to increase germination rate. It also saves space and makes the growing process more efficient.
MAINTENANCE OF MICROGREENS TRAYS
Proper maintenance of trays is essential for consistent, high-quality harvests. Always clean the trays thoroughly after each harvest to avoid disease spread. Additionally, don’t continuously reuse cracked or broken trays as they can shelter detrimental pathogens.
Microgreens trays, though a seemingly simple part of the growing process, can significantly affect the quality of the harvest. By understanding the different types of trays and identifying what fits your growing conditions and requirements, you can cultivate microgreens with optimal nutrition and flavor. Whether you’re a rookie or an urban farming enthusiast, investing in the right tray can take your microgreens game to the next level. Remember, successful cultivation of microgreens is not merely about growing these greens fast but about nourishing them well.
