Microgreens trays

Microgreens trays are specialized containers for growing edible sprouts, popular in urban agriculture and gastronomy.

About this subject

Microgreens trays are designed for the rapid and efficient cultivation of vegetable, herb, and grain sprouts, harvested just after the cotyledons emerge. These containers vary in material: rigid plastic, recyclable polypropylene, or biodegradable trays made from coconut fiber and cellulose. Many models include a drainage system to prevent waterlogging of roots, a critical factor to avoid mold. The standard size of 25 cm x 50 cm allows fitting into greenhouses and modular racks.

Cultivation requires high-density seeds, a lightweight substrate such as peat or coconut coir, and controlled lighting. Microgreens like broccoli, radish, and sunflower reach harvest in 7 to 14 days. Studies indicate that these sprouts concentrate up to 40 times more nutrients than mature plants, particularly vitamins C, E, and K. Restaurants and chefs value the trays for year-round access to fresh, visually appealing ingredients.

The popularity of microgreens trays grows with urban agriculture and the farm-to-table movement. Hydroponic systems and stackable trays optimize small spaces such as kitchens and balconies. Furthermore, reusable trays reduce plastic waste, while compostable disposable versions cater to organic producers. Choosing the right model depends on cultivation cycle, budget, and scale: standard trays last multiple harvests but require careful cleaning.

Frequently Asked Questions

How to choose the ideal microgreens tray?

Consider the material: reusable plastic for continuous cultivation, or biodegradable for disposal. Check for drainage holes and ensure the size fits your space. Trays with lids help maintain humidity during germination.

How long does it take to harvest microgreens from trays?

Most varieties are ready in 7 to 14 days. Fast-growing types like radish and mustard are quicker; beet and cilantro may take up to 21 days. Harvest when the cotyledons are fully open.

Can I reuse a microgreens tray?

Yes, if it is made of durable material and cleaned after each harvest. Wash with mild soap and water or a 3% hydrogen peroxide solution to eliminate pathogens. Avoid reusing biodegradable trays, as they lose structural integrity.