Microgreens are baby vegetables or herbs that are harvested 10-12 days after they have sprouted and produced their first set of leaves.They are packed with nutrients, antioxidants and vitamins for the eyes, skin, bone development, healthy digestive system and for boosting your immunity. While their nutrient contents vary slightly, most varieties tend to be rich in potassium, iron, zinc, magnesium and copper. In fact, research comparing microgreens to more mature greens reports that nutrient levels in microgreens can be up to nine times higher than those found in mature green (health line.com)