What are Microgreens?
Microgreens are the sprouted seeds of various lettuces and greens. The seeds are grown in small, shallow containers like seed flats that make it easier to harvest. In addition to lettuce microgreens, you can sprout cruciforms, beets, radishes, celery, basil, and dill. Microgreen production is expensive and time consuming in large scale operations but at home, growing microgreens is very simple.
Sprouting Microgreens
Many gardeners prefer to sprout the seeds before they plant them. If you wish to do so, you can wrap your seeds in a moist paper towel in a closed plastic bag until they sprout and then sow them. However, it could be difficult to plant the sprouted seed without breaking off the tender new growth. The plants grow so quickly that sprouting microgreens isn’t really necessary.
How to Grow Microgreens
Growing microgreens requires soil, a container, heat, water, and seeds. Learning how to grow microgreens is a great project for children. For the container, choose a low, almost flat tray, preferably with drainage. The soil used should be a potting mix with a little extra perlite mixed into the medium. Lettuce microgreens can be sown on the surface of the soil or lightly covered with a sifting of fine soil. Heavier seeds need complete soil contact and should be sown ¼ to 1/8 inch (3-6 mm.) deep. Microgreens don’t need fertilizer but they do need to be kept moist. A water mister is useful for dampening the soil and you can place a lid or plastic wrap over the container until the seeds sprout. Place the container where temperatures are at least 60 degrees F. (16 C.) for germination. Lettuce microgreens and some other greens can be grown in slightly cooler temperatures. Give the microgreens plenty of bright indirect light.
Harvesting Microgreens
Use a pair of kitchen shears to cut off the tiny plants as you need them. They’re ready for harvest when they reach the true leaf stage– generally at about 2 inches (5 cm.) tall. The microgreens don’t keep long and are prone to wilting. They should be washed thoroughly to ensure that no pathogen or contamination is present.
