Gardening through the winter: How you can grow microgreens indoors

As winter settles in and the outdoor gardening season comes to a close, many gardeners may feel a sense of loss, especially those who take pride in growing their own fresh produce. However, just because the temperatures drop, and the days shorten does not mean you have to put your green thumb on hold. One of the easiest and most rewarding ways to keep gardening during the colder months is by growing microgreens indoors.

Microgreens are young, edible plants harvested at an early stage of growth, often within 7 to 21 days. They are packed with flavor, nutrition, and color, and can be grown year-round with minimal space and resources. Whether you want to add some greenery to your kitchen or enjoy fresh, homegrown snacks, microgreens are an easy way to keep gardening through the winter. This article will show you how simple it is to grow these tiny greens indoors and add fresh, nutrient-rich produce to your meals, right from your windowsill.

A wide variety of seeds can be used for microgreens, including popular options like radish, broccoli, pea shoots, sunflower, and basil, each offering unique flavors and nutritional benefits. Photo Credit: Adobe Stock Images

To get started growing microgreens, you’ll need just a few basic supplies. First, choose a shallow tray or container with drainage holes to allow excess water to escape. A seed-starting mix or potting soil will provide a suitable growing medium for the seeds.

You’ll also need seeds specifically labeled for microgreens, such as radish, broccoli, or pea shoots, which are fast-growing and nutritious. A light source is essential, especially during winter months when natural sunlight may be limited; you can place your trays near a sunny window or use grow lights to provide the necessary light for healthy growth. Lastly, a spray bottle or watering can will help keep the soil moist without over-wetting it. With these simple supplies, you’ll be ready to grow fresh microgreens right at home.

To grow microgreens, start by preparing your tray with a 1- to 2-inch layer of seed-starting mix or potting soil. Evenly scatter your microgreen seeds over the surface, making sure they’re not too crowded, then lightly press them into the soil using a flat tool or your hand. Some seeds may require a thin layer of soil to cover them, while others can be left exposed. Mist the seeds gently with water to moisten the soil and then cover the tray with plastic wrap or a clear dome to maintain humidity during germination.

Place the tray in a warm area (65–75°F) and remove the cover once the seeds begin to sprout, which typically takes 2–3 days. Afterward, position the tray under a grow light or near a sunny window, and continue to mist daily to keep the soil moist, not soggy.

Once the microgreens reach about 2-3 inches in height, usually in 7-21 days, you can harvest them by cutting just above the soil line with scissors.

Pressing seeds into the growing media helps ensure good seed-to-soil contact, which is crucial for effective germination and even growth.

There are a few common issues you might encounter when growing microgreens, but they can usually be fixed with simple adjustments.

One issue is mold or mildew growth, which often occurs in overly humid conditions. To prevent this, ensure your microgreens are not too crowded and provide adequate air circulation by removing plastic coverings once seeds have germinated. If mold appears, gently remove affected areas and adjust watering to avoid over-wetting the soil. Another issue is uneven germination, which can happen if the seeds are not pressed into the soil evenly or if they’re watered inconsistently. To fix this, make sure to scatter seeds evenly and water gently but thoroughly, maintaining a consistent moisture level. Finally, insufficient light can cause leggy or weak growth. If this happens, move your tray closer to a bright window or use a grow light to provide adequate light for at least 12-16 hours a day. With a few simple adjustments, you can troubleshoot and ensure a healthy, successful microgreens crop.

Harvesting microgreens is simple and quick, usually done when they reach 2 to 3 inches in height, typically within 7 to 21 days of planting. To harvest, use a clean pair of scissors or sharp knife to cut the greens just above the soil line. Be careful not to disturb the roots, as this may affect the regrowth of your next batch. Once harvested, rinse the microgreens gently with water to remove any soil or debris, then dry them using a paper towel or salad spinner. Microgreens are incredibly versatile in the kitchen and can be added to salads, sandwiches, wraps, smoothies, and soups, or used as a garnish for a fresh pop of flavor and color.

They’re not only delicious but also packed with nutrients, making them a healthy addition to nearly any meal.