Microgreens are small plants that grow from the seeds of vegetables and herbs in just a week or two – the baby versions. In addition to their first leaves (i.e. cotyledons), the microgreens also produce a stem and roots. You can eat both the leaves and stems of microgreens, which are full of flavor, vitamins and minerals. Scientists see microgreens as a functional food, which means that they can provide key nutrients in a practical way. Some people call them a superfood.