7 Supplies for Growing Microgreens Indoors

Imagine harvesting crisp, flavorful greens from a tray on your kitchen counter, just days after planting. This isn’t a far-off dream; it’s the simple reality of growing microgreens indoors. With the right setup, you can have a continuous supply of nutrient-dense food year-round, regardless of the weather outside.

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Why Grow Your Own Microgreens Indoors?

Growing microgreens at home puts you in complete control of your food source. You decide the growing medium, you ensure no pesticides are used, and you harvest them at the peak of freshness and nutritional value. Unlike greens from the store, which can be days old by the time you buy them, homegrown microgreens go from living plant to plate in seconds.

The speed of the process is a major advantage. Most varieties are ready to harvest in just 7 to 14 days, offering near-instant gratification. This rapid cycle makes it an ideal project for those with limited space or patience. It’s a small-scale farming operation that can fit on a countertop or a single shelf, providing a consistent and rewarding harvest with minimal investment.

Growing Trays – Bootstrap Farmer 1020 Trays

Every microgreen operation starts with the foundation: the growing tray. This isn’t the place to skimp with flimsy, single-use plastic that cracks after one or two cycles. You need a tray that can handle the weight of moist soil, support a dense mat of greens, and withstand repeated washing and reuse.

The Bootstrap Farmer 1020 Trays are the clear choice for anyone serious about growing microgreens. Made from extra-strength, BPA-free plastic, these trays are built to last for years, not just a single season. They come in two essential configurations:

• Trays with holes: For holding your growing medium and allowing for proper drainage.
• Trays without holes: Used as a bottom tray for watering, catching runoff, and preventing messes.

Using these two types of trays together enables bottom-watering, a critical technique that keeps the delicate stems and leaves dry, preventing mold and rot. The standardized 1020 size (roughly 10 by 20 inches) is the industry norm, ensuring compatibility with shelving, blackout domes, and grow lights. These trays are for the grower who values durability and wants to build a system that works, rather than replacing cheap equipment every few months.

Growing Medium – Wonder Soil Coco Coir Bricks

Your seeds need a clean, sterile, and moisture-retentive medium to germinate and thrive. While traditional potting soil can work, it often contains stray seeds, fungal spores, or pests that can ruin a microgreen crop. A soilless medium like coco coir provides a perfect, inert starting point.

Wonder Soil Coco Coir Bricks are an excellent solution, especially for indoor growers with limited storage. These compressed bricks of coconut fiber expand significantly when you add water, turning a small, easy-to-store block into a tray’s worth of fluffy growing medium. This particular brand pre-amends its coir with beneficial nutrients like worm castings, kelp, and mycorrhizae, giving your seedlings a nutritional boost right from the start.

Using a compressed brick is incredibly efficient. There are no heavy, bulky bags of soil to haul or store, and the rehydration process is simple and clean. One brick is often perfectly portioned for a single 1020 tray, taking the guesswork out of measuring. This product is ideal for the grower who prioritizes convenience, cleanliness, and a nutrient-rich start for their greens.

Microgreen Seeds – True Leaf Market Basic Salad Mix

The quality of your seeds directly determines the quality of your harvest. Not all seeds are created equal; you need seeds specifically intended for microgreen production, which means they have been tested for high germination rates and are free of fungicides often used on seeds meant for field planting.

For your first few harvests, the True Leaf Market Basic Salad Mix is a foolproof choice. This mix typically includes fast-growing, easy-to-manage varieties like broccoli, kale, kohlrabi, arugula, and red cabbage. Starting with a pre-made mix removes the complexity of figuring out different germination times and seed densities, giving you a beautiful, multi-textured, and flavorful crop with a single planting.

True Leaf Market is a reputable source known for high-quality, non-GMO seeds, which is crucial for a crop you’ll be eating raw just days after sprouting. This mix is perfect for beginners who want a reliable and delicious result without a steep learning curve. It’s not for the grower who wants to experiment with single, exotic varieties just yet, but for the person who wants to successfully harvest a tray of tasty salad greens on their first try.

Setting Up Your Indoor Microgreen Station

Your microgreen station doesn’t need to be complex, but it does need to be intentional. Choose a location with good air circulation that can tolerate a bit of moisture and stray soil. A spare bedroom, a basement corner, or even a dedicated kitchen counter can work, as long as the temperature is stable.

A simple wire shelving unit is the most common and effective setup. The open-wire design allows for air movement and makes it easy to hang grow lights directly above each shelf. A standard 48-inch wide shelf can comfortably hold four 1020 trays side-by-side. Plan your workflow: have space for your supplies, a surface for seeding trays, and easy access for watering and harvesting. Thinking through the logistics beforehand prevents headaches later.

Grow Lights – Barrina T5 LED Grow Light Strips

While some microgreens can grow on a sunny windowsill, the results are often leggy, uneven, and disappointing. To get the dense, uniform, and vibrant canopy you see in pictures, you need dedicated grow lights. Consistent, direct overhead light is non-negotiable for a quality crop.

Barrina T5 LED Grow Light Strips are a fantastic, cost-effective lighting solution for a home setup. These lights are incredibly lightweight, energy-efficient, and can be daisy-chained together, allowing you to power an entire shelf of lights from a single outlet. Their full-spectrum white light is ideal for vegetative growth and is much more pleasant to have in your home than the harsh purple/pink glow of other models.

Installation is simple; they can be hung with zip ties or clips from the wire shelf directly above your trays, allowing for easy height adjustment. For most microgreens, keeping the lights 2-4 inches above the canopy provides the perfect intensity. Combine these lights with a simple outlet timer to provide a consistent 12-16 hours of light per day. These are for the grower who wants a professional-quality lighting system without the cost, heat, or complexity of traditional grow lights.

Misting Bottle – Flairosol Fine Mist Spray Bottle

During the first few days of germination, your seeds need to stay consistently moist but not waterlogged. A regular spray bottle can be too aggressive, blasting seeds into clumps and creating uneven patches. Gentle, even hydration is the goal.

The Flairosol Fine Mist Spray Bottle is a game-changer for this delicate phase. Unlike a standard trigger sprayer, it delivers a continuous, aerosol-like mist with a single pump. This ultra-fine spray gently settles on the soil and seeds without dislodging them, ensuring every seed gets the moisture it needs for germination.

This tool is specifically for the initial seeding and germination period. Once your microgreens have developed roots, you will switch to bottom-watering. However, nailing that first step is critical, and the Flairosol makes it nearly foolproof. It’s a small upgrade that makes a significant difference in germination success, perfect for anyone who has struggled with patchy growth in the past.

Understanding the Critical Blackout Period

One of the most important and often overlooked steps in growing microgreens is the "blackout period." After seeding and misting your tray, you must cover it to completely block out all light for 2 to 4 days. This mimics the conditions of a seed buried underground.

This period accomplishes two critical things. First, it forces the seedling to push upwards in search of light, resulting in a longer, more uniform stem. Second, and more importantly, it encourages the seed to establish a strong root system before it expends energy on leaf growth. The weight of another tray or a small paver placed on top of the dome during this time provides physical resistance, tricking the seedlings into growing even more robust roots. Skipping this step often leads to weak, leggy greens with poorly developed roots.

Blackout Domes – Bootstrap Farmer 1020 Domes

To execute the blackout period correctly, you need a way to block light and trap humidity effectively. While you can improvise by covering your tray with a dark towel or another inverted tray, a dedicated dome provides a more consistent and professional result.

The Bootstrap Farmer 1020 Domes are designed to work seamlessly with their trays. These opaque black domes create a perfect light-proof environment while also trapping the moisture necessary for germination. They are made from the same durable plastic as the trays, so they won’t crack or warp when you stack a weighted tray on top of them.

Using a purpose-built dome creates a mini-greenhouse effect, maintaining high humidity around the seeds for excellent germination rates. The snug fit ensures no light leaks in from the sides. This is the right tool for the grower who wants to standardize their process and achieve repeatable, predictable results with every tray.

Harvesting Shears – Kyocera Ceramic Kitchen Scissors

When your microgreens are ready, you need to harvest them with a clean, sharp cut. A dull knife or scissors will crush the delicate stems rather than slicing them, which can reduce their shelf life and make a mess. The tool must be sharp, precise, and easy to clean.

Kyocera Ceramic Kitchen Scissors are an outstanding tool for this job. The ceramic blades are significantly sharper than steel and hold their edge for much longer. This razor-sharpness allows you to make a clean, effortless cut through a dense mat of microgreens without pulling or tearing the stems.

Because ceramic is chemically inert, it won’t rust or transfer a metallic taste to your greens. It’s also incredibly easy to sanitize between harvests. The only consideration is that ceramic can be brittle; these are a dedicated harvesting tool, not for cutting boxes or wire. For the grower who wants a perfect, professional-looking harvest every time, these scissors are a worthy investment.

How to Properly Store Your Microgreen Harvest

Once you’ve made that perfect cut, proper storage is key to preserving the freshness and crunch of your microgreens. The two enemies of stored microgreens are moisture and air. Handling them correctly can extend their life in the refrigerator from a few days to over a week.

The best method is to harvest your greens when they are completely dry, preferably before your daily watering. Place a dry paper towel in the bottom of an airtight container, add the microgreens without packing them down too tightly, and place another dry paper towel on top before sealing the lid. The paper towels will absorb any excess moisture and condensation.

Store the container in the crisper drawer of your refrigerator. Avoid washing the microgreens until right before you plan to eat them. Washing them and then storing them is the fastest way to turn your beautiful harvest into a slimy mess.

Your First Harvest and What to Grow Next

Your first harvest is a major milestone. Most salad mixes are ready when their first true leaves (the second set of leaves) have opened and the greens are about 2-3 inches tall. The flavor is often most concentrated at this stage. Don’t be afraid to taste them as they grow to find your preferred harvest time.

After you’ve mastered the basic salad mix, you can branch out to single varieties to explore different flavors and textures. Some great next steps include:

• Spicy Radish: Incredibly fast-growing (7-8 days) with a satisfying spicy kick.
• Broccoli: A very easy and reliable grower with a mild, fresh flavor packed with nutrients.
• Pea Shoots: A larger seed that needs to be soaked first, but rewards you with tall, crunchy, sweet-tasting shoots.

Each variety has its own small quirks, but the fundamental process you learned with the mix remains the same. Keep experimenting, and you’ll soon have a rotating crop of your favorite flavors growing right in your home.

With these seven essential supplies, you have a complete, reliable system for producing high-quality microgreens. This isn’t just about growing food; it’s about building a skill and a connection to what you eat. Start with one tray, and discover how simple and rewarding indoor farming can be.