DIY Guide: Setting Up Your Microgreen Tray

Setting up a microgreen tray might appear daunting, but it’s relatively straightforward once you understand the basics. It’s an enjoyable and satisfying endeavor that anyone can undertake with a little preparation and a basic understanding

Written by: Elena Monroe

Published on: May 5, 2026

Setting up a microgreen tray might appear daunting, but it’s relatively straightforward once you understand the basics. It’s an enjoyable and satisfying endeavor that anyone can undertake with a little preparation and a basic understanding of how microgreens grow. Microgreens, small edible plants that are bursting with flavor and nutrients, are grown from various vegetable and herb seeds. This article will guide you through the process of setting up your microgreen tray, from selecting the right materials and seeds to planting, watering, and and harvesting.

### Choose Your Tray

Choosing the right microgreens tray depends on your personal requirements. An ideal tray should be about 1 to 2 inches deep, with enough surface area to grow a sizeable batch of greens. The approximate dimensions that work well are 10 by 20 inches. To avert waterlogging, it’s important to select a tray with drainage holes. If there are none, you can create your own using a drill.

Plastic trays are often the most common choice due to their affordability and durability. However, for those with environmental concerns, biodegradable trays are also procurable. Regardless of the type, ensure the tray is sturdy enough to support the weight of the growing medium, seeds, and water.

### Choose Your Growing Medium

Microgreens can thrive in a variety of growing mediums. The choice will vary depending on personal preference, availability, and your budget.

Soil-based mediums are often favored due to their nutrient-rich properties. They are beneficial for microgreens as they offer an abundance of essential nutrients for optimal growth. However, keep in mind that soil is heavy and potentially messy.

Coconut coir is another excellent choice due to its superior water retention qualities, meaning your microgreens will rarely go thirsty. It is also more lightweight and cleaner than soil.

A hydroponic medium is also an option for those who prefer a soilless setup. They provide good aeration and water retention qualities but might need additional nutrients for the best results.

### Seed Selection

Microgreen seeds come in a wide array of varieties, from radishes and sunflowers to peas and kale. The choice of seeds primarily depends on your personal taste preferences and the amount of time you want to dedicate to growing them. While radishes are quick sprouters, needing only a week or so, sunflowers need a little more time, generally taking ten days to grow. Make sure to purchase high-quality seeds from a reputable source to ensure optimal growth and health of your microgreens.

### Sowing The Seeds

Finally, we get to the planting stage. Start by saturating your chosen growing medium with water. The medium should be damp but not waterlogged. Spread the medium evenly on the bottom of your tray. Depending upon the type of medium and the type of microgreens, the number of seeds you’ll need will vary. So, follow the instructions provided with your seeds.

Afterward, sprinkle the seeds evenly across the surface of the medium. There’s no need to cover them; microgreen seeds do well just pushed gently into the growing medium.

Aim for a dense planting but avoid too much clumping, which could lead to poor aeration and increase the risk of fungal diseases.

### The Right Amount of Light and Temperature

Microgreens need adequate light and a suitable temperature range for optimal growth. They typically do well in temperatures between 60-70°F (16-21°C). Too high or too low can inhibit germination. When it comes to light, microgreens thrive in bright, indirect light. A sunny windowsill can work well, but a grow light will provide the most consistent results, especially if you’re growing in a space without sufficient natural light.

### Watering Your Microgreens

During the initial stages of growth, it’s best to either mist your microgreens or water them from below to avoid root disturbance. Look for a moisture balance; the soil should be damp, but not waterlogged. Over or under watering can hinder growth.

### Harvesting Your Microgreens

The moment has finally arrived – harvest time. Microgreens are usually ready to harvest once they’ve developed their first true leaves, typically in one to three weeks, depending on the variety. Using a clean pair of scissors, cut the shoots just above the soil line, rinse gently, and enjoy your microgreens fresh.

Remember, each type of microgreen will look different when it’s ready to harvest, so it’s helpful to familiarize yourself with how your chosen variety should look at maturity.

Setting up your microgreen tray might require patience and experimentation initially, but the result is a fresh, nutritious harvest right from your home. Let this guide be your companion as you embark on your DIY microgreens endeavor.

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